1297947396 has 12 divisors (see below), whose sum is σ = 3028543952. Its totient is φ = 432649128.

The previous prime is 1297947367. The next prime is 1297947407. The reversal of 1297947396 is 6937497921.

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, 54081130 + ... + 54081153.

Almost surely, 2^1297947396 is an apocalyptic number.

It is an amenable number.

1297947396 is an abundant number, since it is smaller than the sum of its proper divisors (1730596556).

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

1297947396 is a wasteful number, since it uses less digits than its factorization.

1297947396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108162290 (or 108162288 counting only the distinct ones).

The product of its digits is 5143824, while the sum is 57.

The square root of 1297947396 is about 36027.0370138872. The cubic root of 1297947396 is about 1090.8181708898.

The spelling of 1297947396 in words is "one billion, two hundred ninety-seven million, nine hundred forty-seven thousand, three hundred ninety-six".