40349965 has 8 divisors (see below), whose sum is σ = 48790368. Its totient is φ = 32033040.

The previous prime is 40349951. The next prime is 40349989. The reversal of 40349965 is 56994304.

40349965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40349965 - 2¹⁹ = 39825677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 30147 + ... + 31456.

It is an arithmetic number, because the mean of its divisors is an integer number (6098796).

Almost surely, 2^40349965 is an apocalyptic number.

It is an amenable number.

40349965 is a deficient number, since it is larger than the sum of its proper divisors (8440403).

40349965 is a wasteful number, since it uses less digits than its factorization.

40349965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61739.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 40349965 is about 6352.1622302961. The cubic root of 40349965 is about 342.9896808598.

It can be divided in two parts, 40349 and 965, that added together give a palindrome (41314).

The spelling of 40349965 in words is "forty million, three hundred forty-nine thousand, nine hundred sixty-five".