1396401706 has 64 divisors (see below), whose sum is σ = 2514240000. Its totient is φ = 581188608.

The previous prime is 1396401701. The next prime is 1396401749. The reversal of 1396401706 is 6071046931.

It is not an unprimeable number, because it can be changed into a prime (1396401701) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7016995 + ... + 7017193.

It is an arithmetic number, because the mean of its divisors is an integer number (39285000).

Almost surely, 2^1396401706 is an apocalyptic number.

1396401706 is a deficient number, since it is larger than the sum of its proper divisors (1117838294).

1396401706 is a wasteful number, since it uses less digits than its factorization.

1396401706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 1396401706 is about 37368.4587051701. The cubic root of 1396401706 is about 1117.7296979565.

The spelling of 1396401706 in words is "one billion, three hundred ninety-six million, four hundred one thousand, seven hundred six".