8405972 has 12 divisors (see below), whose sum is σ = 14747040. Its totient is φ = 4192536.

The previous prime is 8405951. The next prime is 8405977. The reversal of 8405972 is 2795048.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8405977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 638 + ... + 4149.

It is an arithmetic number, because the mean of its divisors is an integer number (1228920).

Almost surely, 2^8405972 is an apocalyptic number.

It is an amenable number.

8405972 is a deficient number, since it is larger than the sum of its proper divisors (6341068).

8405972 is a wasteful number, since it uses less digits than its factorization.

8405972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5230 (or 5228 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 8405972 is about 2899.3054340652. The cubic root of 8405972 is about 203.3274339117.

The spelling of 8405972 in words is "eight million, four hundred five thousand, nine hundred seventy-two".