40332657 has 12 divisors (see below), whose sum is σ = 54338480. Its totient is φ = 26609160.

The previous prime is 40332647. The next prime is 40332689. The reversal of 40332657 is 75623304.

It is not a de Polignac number, because 40332657 - 2⁴ = 40332641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40332647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129532 + ... + 129842.

Almost surely, 2^40332657 is an apocalyptic number.

It is an amenable number.

40332657 is a deficient number, since it is larger than the sum of its proper divisors (14005823).

40332657 is an equidigital number, since it uses as much as digits as its factorization.

40332657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764 (or 453 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 30.

The square root of 40332657 is about 6350.7997134219. The cubic root of 40332657 is about 342.9406323711.

The spelling of 40332657 in words is "forty million, three hundred thirty-two thousand, six hundred fifty-seven".