1396706772 has 24 divisors (see below), whose sum is σ = 3276992992. Its totient is φ = 462996000.

The previous prime is 1396706719. The next prime is 1396706797. The reversal of 1396706772 is 2776076931.

It is a congruent 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, 319354 + ... + 323697.

Almost surely, 2^1396706772 is an apocalyptic number.

1396706772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1396706772 is an abundant number, since it is smaller than the sum of its proper divisors (1880286220).

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

1396706772 is a wasteful number, since it uses less digits than its factorization.

1396706772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643239 (or 643237 counting only the distinct ones).

The product of its (nonzero) digits is 666792, while the sum is 48.

The square root of 1396706772 is about 37372.5403471586. The cubic root of 1396706772 is about 1117.8110872632.

The spelling of 1396706772 in words is "one billion, three hundred ninety-six million, seven hundred six thousand, seven hundred seventy-two".