469646138 has 16 divisors (see below), whose sum is σ = 764202600. Its totient is φ = 215175936.

The previous prime is 469646119. The next prime is 469646153. The reversal of 469646138 is 831646964.

It can be written as a sum of positive squares in 4 ways, for example, as 185150449 + 284495689 = 13607^2 + 16867^2 .

It is a junction number, because it is equal to n+sod(n) for n = 469646092 and 469646101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62363 + ... + 69486.

Almost surely, 2^469646138 is an apocalyptic number.

469646138 is a deficient number, since it is larger than the sum of its proper divisors (294556462).

469646138 is a wasteful number, since it uses less digits than its factorization.

469646138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132001.

The product of its digits is 746496, while the sum is 47.

The square root of 469646138 is about 21671.3206335009. The cubic root of 469646138 is about 777.3028352115.

The spelling of 469646138 in words is "four hundred sixty-nine million, six hundred forty-six thousand, one hundred thirty-eight".