406049972 has 12 divisors (see below), whose sum is σ = 711594660. Its totient is φ = 202737216.

The previous prime is 406049971. The next prime is 406050077. The reversal of 406049972 is 279940604.

It can be written as a sum of positive squares in 2 ways, for example, as 101687056 + 304362916 = 10084^2 + 17446^2 .

It is a super-2 number, since 2×406049972² = 329753159522401568, which contains 22 as substring.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406049971) 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, 68753 + ... + 74424.

It is an arithmetic number, because the mean of its divisors is an integer number (59299555).

Almost surely, 2^406049972 is an apocalyptic number.

It is an amenable number.

406049972 is a deficient number, since it is larger than the sum of its proper divisors (305544688).

406049972 is a wasteful number, since it uses less digits than its factorization.

406049972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143890 (or 143888 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 406049972 is about 20150.6816758143. The cubic root of 406049972 is about 740.5024418304.

The spelling of 406049972 in words is "four hundred six million, forty-nine thousand, nine hundred seventy-two".