1390071936 has 64 divisors (see below), whose sum is σ = 4028061600. Its totient is φ = 421232640.

The previous prime is 1390071931. The next prime is 1390071941. The reversal of 1390071936 is 6391700931.

It is an interprime number because it is at equal distance from previous prime (1390071931) and next prime (1390071941).

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 1390071894 and 1390071903.

It is not an unprimeable number, because it can be changed into a prime (1390071931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160321 + ... + 168768.

Almost surely, 2^1390071936 is an apocalyptic number.

1390071936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1390071936 is an abundant number, since it is smaller than the sum of its proper divisors (2637989664).

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

1390071936 is a wasteful number, since it uses less digits than its factorization.

1390071936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329117 (or 329105 counting only the distinct ones).

The product of its (nonzero) digits is 30618, while the sum is 39.

The square root of 1390071936 is about 37283.6684890315. The cubic root of 1390071936 is about 1116.0382818538.

The spelling of 1390071936 in words is "one billion, three hundred ninety million, seventy-one thousand, nine hundred thirty-six".