439630161554 has 4 divisors (see below), whose sum is σ = 659445242334. Its totient is φ = 219815080776.

The previous prime is 439630161533. The next prime is 439630161559. The reversal of 439630161554 is 455161036934.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 388970505625 + 50659655929 = 623675^2 + 225077^2 .

It is a super-2 number, since 2×439630161554² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 439630161499 and 439630161508.

It is not an unprimeable number, because it can be changed into a prime (439630161559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109907540387 + ... + 109907540390.

Almost surely, 2^439630161554 is an apocalyptic number.

439630161554 is a deficient number, since it is larger than the sum of its proper divisors (219815080780).

439630161554 is a wasteful number, since it uses less digits than its factorization.

439630161554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219815080779.

The product of its (nonzero) digits is 1166400, while the sum is 47.

The spelling of 439630161554 in words is "four hundred thirty-nine billion, six hundred thirty million, one hundred sixty-one thousand, five hundred fifty-four".