469138356 has 18 divisors (see below), whose sum is σ = 1185877602. Its totient is φ = 156379440.

The previous prime is 469138339. The next prime is 469138363. The reversal of 469138356 is 653831964.

469138356 is a `hidden beast` number, since 469 + 138 + 3 + 56 = 666.

It can be written as a sum of positive squares in only one way, i.e., 462938256 + 6200100 = 21516^2 + 2490^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6515775 + ... + 6515846.

It is an arithmetic number, because the mean of its divisors is an integer number (65882089).

Almost surely, 2^469138356 is an apocalyptic number.

It is an amenable number.

469138356 is an abundant number, since it is smaller than the sum of its proper divisors (716739246).

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

469138356 is a wasteful number, since it uses less digits than its factorization.

469138356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13031631 (or 13031626 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 469138356 is about 21659.6019354004. The cubic root of 469138356 is about 777.0225939177.

The spelling of 469138356 in words is "four hundred sixty-nine million, one hundred thirty-eight thousand, three hundred fifty-six".