40455387 has 12 divisors (see below), whose sum is σ = 66783600. Its totient is φ = 23117328.

The previous prime is 40455361. The next prime is 40455407. The reversal of 40455387 is 78355404.

It is not a de Polignac number, because 40455387 - 2⁶ = 40455323 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (40455187) 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, 321012 + ... + 321137.

It is an arithmetic number, because the mean of its divisors is an integer number (5565300).

Almost surely, 2^40455387 is an apocalyptic number.

40455387 is a deficient number, since it is larger than the sum of its proper divisors (26328213).

40455387 is a wasteful number, since it uses less digits than its factorization.

40455387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642162 (or 642159 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 40455387 is about 6360.4549365592. The cubic root of 40455387 is about 343.2881298035.

The spelling of 40455387 in words is "forty million, four hundred fifty-five thousand, three hundred eighty-seven".