1239314644 has 12 divisors (see below), whose sum is σ = 2170451668. Its totient is φ = 619185600.

The previous prime is 1239314639. The next prime is 1239314689. The reversal of 1239314644 is 4464139321.

It can be written as a sum of positive squares in 2 ways, for example, as 936972100 + 302342544 = 30610^2 + 17388^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111987 + ... + 122554.

Almost surely, 2^1239314644 is an apocalyptic number.

It is an amenable number.

1239314644 is a deficient number, since it is larger than the sum of its proper divisors (931137024).

1239314644 is a wasteful number, since it uses less digits than its factorization.

1239314644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235866 (or 235864 counting only the distinct ones).

The product of its digits is 62208, while the sum is 37.

The square root of 1239314644 is about 35203.9009770224. The cubic root of 1239314644 is about 1074.1391035017.

The spelling of 1239314644 in words is "one billion, two hundred thirty-nine million, three hundred fourteen thousand, six hundred forty-four".