40890807 has 24 divisors (see below), whose sum is σ = 60913424. Its totient is φ = 26417664.

The previous prime is 40890779. The next prime is 40890823. The reversal of 40890807 is 70809804.

It is not a de Polignac number, because 40890807 - 2⁶ = 40890743 is a prime.

It is a super-2 number, since 2×40890807² = 3344116194222498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40890887) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60423 + ... + 61095.

Almost surely, 2^40890807 is an apocalyptic number.

40890807 is a deficient number, since it is larger than the sum of its proper divisors (20022617).

40890807 is a wasteful number, since it uses less digits than its factorization.

40890807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879 (or 876 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 40890807 is about 6394.5920120051. The cubic root of 40890807 is about 344.5153370980.

The spelling of 40890807 in words is "forty million, eight hundred ninety thousand, eight hundred seven".