1397902 has 8 divisors (see below), whose sum is σ = 2287512. Its totient is φ = 635400.

The previous prime is 1397881. The next prime is 1397909. The reversal of 1397902 is 2097931.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31749 + ... + 31792.

It is an arithmetic number, because the mean of its divisors is an integer number (285939).

2^1397902 is an apocalyptic number.

1397902 is a deficient number, since it is larger than the sum of its proper divisors (889610).

1397902 is a wasteful number, since it uses less digits than its factorization.

1397902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63554.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 1397902 is about 1182.3290574117. The cubic root of 1397902 is about 111.8129850947.

The spelling of 1397902 in words is "one million, three hundred ninety-seven thousand, nine hundred two".