1397955 has 32 divisors (see below), whose sum is σ = 2467584. Its totient is φ = 671616.

The previous prime is 1397953. The next prime is 1397959. The reversal of 1397955 is 5597931.

It is not a de Polignac number, because 1397955 - 2¹ = 1397953 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (1397951) 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, 13012 + ... + 13118.

It is an arithmetic number, because the mean of its divisors is an integer number (77112).

2^1397955 is an apocalyptic number.

1397955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1397955 is a deficient number, since it is larger than the sum of its proper divisors (1069629).

1397955 is a wasteful number, since it uses less digits than its factorization.

1397955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195.

The product of its digits is 42525, while the sum is 39.

The square root of 1397955 is about 1182.3514705873. The cubic root of 1397955 is about 111.8143981678.

The spelling of 1397955 in words is "one million, three hundred ninety-seven thousand, nine hundred fifty-five".