39422440 has 32 divisors (see below), whose sum is σ = 88949160. Its totient is φ = 15724800.

The previous prime is 39422429. The next prime is 39422441. The reversal of 39422440 is 4422493.

It can be written as a sum of positive squares in 4 ways, for example, as 21325924 + 18096516 = 4618^2 + 4254^2 .

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 39422399 and 39422408.

It is not an unprimeable number, because it can be changed into a prime (39422441) 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, 15670 + ... + 18010.

Almost surely, 2^39422440 is an apocalyptic number.

It is an amenable number.

39422440 is an abundant number, since it is smaller than the sum of its proper divisors (49526720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39422440 is a wasteful number, since it uses less digits than its factorization.

39422440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2773 (or 2769 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 39422440 is about 6278.7291707797. The cubic root of 39422440 is about 340.3411800127.

The spelling of 39422440 in words is "thirty-nine million, four hundred twenty-two thousand, four hundred forty".