1396631436 has 12 divisors (see below), whose sum is σ = 3258806712. Its totient is φ = 465543808.

The previous prime is 1396631429. The next prime is 1396631473. The reversal of 1396631436 is 6341366931.

It is a tau number, because it is divible by the number of its divisors (12).

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, 58192965 + ... + 58192988.

It is an arithmetic number, because the mean of its divisors is an integer number (271567226).

Almost surely, 2^1396631436 is an apocalyptic number.

It is an amenable number.

1396631436 is an abundant number, since it is smaller than the sum of its proper divisors (1862175276).

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

1396631436 is a wasteful number, since it uses less digits than its factorization.

1396631436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116385960 (or 116385958 counting only the distinct ones).

The product of its digits is 209952, while the sum is 42.

The square root of 1396631436 is about 37371.5324277718. The cubic root of 1396631436 is about 1117.7909892890.

The spelling of 1396631436 in words is "one billion, three hundred ninety-six million, six hundred thirty-one thousand, four hundred thirty-six".