472139649 has 12 divisors (see below), whose sum is σ = 682171776. Its totient is φ = 314671032.

The previous prime is 472139597. The next prime is 472139659. The reversal of 472139649 is 946931274.

It is a happy number.

472139649 is a `hidden beast` number, since 472 + 139 + 6 + 49 = 666.

It is not a de Polignac number, because 472139649 - 2²¹ = 470042497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (472139659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48684 + ... + 57570.

It is an arithmetic number, because the mean of its divisors is an integer number (56847648).

Almost surely, 2^472139649 is an apocalyptic number.

It is an amenable number.

472139649 is a deficient number, since it is larger than the sum of its proper divisors (210032127).

472139649 is a wasteful number, since it uses less digits than its factorization.

472139649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14796 (or 14793 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 472139649 is about 21728.7746778322. The cubic root of 472139649 is about 778.6760627579.

The spelling of 472139649 in words is "four hundred seventy-two million, one hundred thirty-nine thousand, six hundred forty-nine".