1396936785 has 8 divisors (see below), whose sum is σ = 2235098880. Its totient is φ = 745032944.

The previous prime is 1396936777. The next prime is 1396936799. The reversal of 1396936785 is 5876396931.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1396936785 - 2³ = 1396936777 is a prime.

It is a super-2 number, since 2×1396936785² = 3902864762572272450, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46564545 + ... + 46564574.

It is an arithmetic number, because the mean of its divisors is an integer number (279387360).

Almost surely, 2^1396936785 is an apocalyptic number.

1396936785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1396936785 is a deficient number, since it is larger than the sum of its proper divisors (838162095).

1396936785 is an equidigital number, since it uses as much as digits as its factorization.

1396936785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93129127.

The product of its digits is 7348320, while the sum is 57.

The square root of 1396936785 is about 37375.6175199822. The cubic root of 1396936785 is about 1117.8724451598.

The spelling of 1396936785 in words is "one billion, three hundred ninety-six million, nine hundred thirty-six thousand, seven hundred eighty-five".