40279365 has 48 divisors (see below), whose sum is σ = 80960256. Its totient is φ = 18144000.

The previous prime is 40279363. The next prime is 40279367. The reversal of 40279365 is 56397204.

40279365 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40279363) and next prime (40279367).

It is not a de Polignac number, because 40279365 - 2¹ = 40279363 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40279361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21465 + ... + 23265.

It is an arithmetic number, because the mean of its divisors is an integer number (1686672).

Almost surely, 2^40279365 is an apocalyptic number.

40279365 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40279365 is an abundant number, since it is smaller than the sum of its proper divisors (40680891).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40279365 is a wasteful number, since it uses less digits than its factorization.

40279365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1890 (or 1887 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 40279365 is about 6346.6026344809. The cubic root of 40279365 is about 342.7895220064.

The spelling of 40279365 in words is "forty million, two hundred seventy-nine thousand, three hundred sixty-five".