1439640952 has 16 divisors (see below), whose sum is σ = 2714932440. Its totient is φ = 715658976.

The previous prime is 1439640919. The next prime is 1439640953. The reversal of 1439640952 is 2590469341.

It is a junction number, because it is equal to n+sod(n) for n = 1439640899 and 1439640908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1439640953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 518718 + ... + 521485.

Almost surely, 2^1439640952 is an apocalyptic number.

It is an amenable number.

1439640952 is a deficient number, since it is larger than the sum of its proper divisors (1275291488).

1439640952 is a wasteful number, since it uses less digits than its factorization.

1439640952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040382 (or 1040378 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 1439640952 is about 37942.6007542973. The cubic root of 1439640952 is about 1129.1493721045.

The spelling of 1439640952 in words is "one billion, four hundred thirty-nine million, six hundred forty thousand, nine hundred fifty-two".