40040858 has 32 divisors (see below), whose sum is σ = 71027712. Its totient is φ = 16689600.

The previous prime is 40040849. The next prime is 40040867. The reversal of 40040858 is 85804004.

It is an interprime number because it is at equal distance from previous prime (40040849) and next prime (40040867).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40040858.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54260 + ... + 54992.

It is an arithmetic number, because the mean of its divisors is an integer number (2219616).

Almost surely, 2^40040858 is an apocalyptic number.

40040858 is a deficient number, since it is larger than the sum of its proper divisors (30986854).

40040858 is a wasteful number, since it uses less digits than its factorization.

40040858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950.

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 40040858 is about 6327.7846044252. The cubic root of 40040858 is about 342.1115933727. Note that the first 3 decimals are identical.

The spelling of 40040858 in words is "forty million, forty thousand, eight hundred fifty-eight".