40265289 has 16 divisors (see below), whose sum is σ = 59754240. Its totient is φ = 26797680.

The previous prime is 40265279. The next prime is 40265297. The reversal of 40265289 is 98256204.

It is a happy number.

It is not a de Polignac number, because 40265289 - 2⁵ = 40265257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40265279) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23779 + ... + 25415.

It is an arithmetic number, because the mean of its divisors is an integer number (3734640).

Almost surely, 2^40265289 is an apocalyptic number.

It is an amenable number.

40265289 is a deficient number, since it is larger than the sum of its proper divisors (19488951).

40265289 is a wasteful number, since it uses less digits than its factorization.

40265289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2557 (or 2551 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 40265289 is about 6345.4935978220. The cubic root of 40265289 is about 342.7495870217.

The spelling of 40265289 in words is "forty million, two hundred sixty-five thousand, two hundred eighty-nine".