40388854 has 16 divisors (see below), whose sum is σ = 67704336. Its totient is φ = 17910400.

The previous prime is 40388837. The next prime is 40388857. The reversal of 40388854 is 45888304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40388857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21487 + ... + 23290.

It is an arithmetic number, because the mean of its divisors is an integer number (4231521).

Almost surely, 2^40388854 is an apocalyptic number.

40388854 is a deficient number, since it is larger than the sum of its proper divisors (27315482).

40388854 is a wasteful number, since it uses less digits than its factorization.

40388854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44831.

The product of its (nonzero) digits is 122880, while the sum is 40.

The square root of 40388854 is about 6355.2225767474. Note that the first 3 decimals coincide. The cubic root of 40388854 is about 343.0998357906.

The spelling of 40388854 in words is "forty million, three hundred eighty-eight thousand, eight hundred fifty-four".