40458321 has 12 divisors (see below), whose sum is σ = 58506448. Its totient is φ = 26941464.

The previous prime is 40458307. The next prime is 40458323. The reversal of 40458321 is 12385404.

It is not a de Polignac number, because 40458321 - 2⁵ = 40458289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40458323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8106 + ... + 12108.

Almost surely, 2^40458321 is an apocalyptic number.

It is an amenable number.

40458321 is a deficient number, since it is larger than the sum of its proper divisors (18048127).

40458321 is a wasteful number, since it uses less digits than its factorization.

40458321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5132 (or 5129 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 40458321 is about 6360.6855762567. The cubic root of 40458321 is about 343.2964285172.

The spelling of 40458321 in words is "forty million, four hundred fifty-eight thousand, three hundred twenty-one".