40452993 has 32 divisors (see below), whose sum is σ = 68908800. Its totient is φ = 22975488.

The previous prime is 40452967. The next prime is 40453001. The reversal of 40452993 is 39925404.

40452993 is a `hidden beast` number, since 40 + 4 + 529 + 93 = 666.

It is not a de Polignac number, because 40452993 - 2⁵ = 40452961 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40452953) 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, 35923 + ... + 37031.

It is an arithmetic number, because the mean of its divisors is an integer number (2153400).

Almost surely, 2^40452993 is an apocalyptic number.

It is an amenable number.

40452993 is a deficient number, since it is larger than the sum of its proper divisors (28455807).

40452993 is a wasteful number, since it uses less digits than its factorization.

40452993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318 (or 1312 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 40452993 is about 6360.2667396895. The cubic root of 40452993 is about 343.2813581631.

The spelling of 40452993 in words is "forty million, four hundred fifty-two thousand, nine hundred ninety-three".