1397960 has 16 divisors (see below), whose sum is σ = 3145500. Its totient is φ = 559168.

The previous prime is 1397959. The next prime is 1397983. The reversal of 1397960 is 697931.

1397960 = T₄₁₀ + T₄₁₁ + ... + T₄₂₅.

It can be written as a sum of positive squares in 2 ways, for example, as 1223236 + 174724 = 1106^2 + 418^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1397960.

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, 17435 + ... + 17514.

2^1397960 is an apocalyptic number.

1397960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1397960 is an abundant number, since it is smaller than the sum of its proper divisors (1747540).

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

1397960 is a wasteful number, since it uses less digits than its factorization.

1397960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34960 (or 34956 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 1397960 is about 1182.3535850159. The cubic root of 1397960 is about 111.8145314748.

The spelling of 1397960 in words is "one million, three hundred ninety-seven thousand, nine hundred sixty".