40309353 has 32 divisors (see below), whose sum is σ = 68587520. Its totient is φ = 22919760.

The previous prime is 40309351. The next prime is 40309421. The reversal of 40309353 is 35390304.

40309353 is a `hidden beast` number, since 4 + 0 + 309 + 353 = 666.

It is not a de Polignac number, because 40309353 - 2¹ = 40309351 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40309351) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50826 + ... + 51612.

It is an arithmetic number, because the mean of its divisors is an integer number (2143360).

Almost surely, 2^40309353 is an apocalyptic number.

It is an amenable number.

40309353 is a deficient number, since it is larger than the sum of its proper divisors (28278167).

40309353 is a wasteful number, since it uses less digits than its factorization.

40309353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074 (or 1068 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 27.

The square root of 40309353 is about 6348.9647187553. The cubic root of 40309353 is about 342.8745698731.

Adding to 40309353 its reverse (35390304), we get a palindrome (75699657).

The spelling of 40309353 in words is "forty million, three hundred nine thousand, three hundred fifty-three".