1397954 has 4 divisors (see below), whose sum is σ = 2096934. Its totient is φ = 698976.

The previous prime is 1397953. The next prime is 1397959. The reversal of 1397954 is 4597931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4597931 = 13 ⋅353687.

It can be written as a sum of positive squares in only one way, i.e., 714025 + 683929 = 845^2 + 827^2 .

It is a super-2 number, since 2×1397954² = 3908550772232, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 349487 + ... + 349490.

2^1397954 is an apocalyptic number.

1397954 is a deficient number, since it is larger than the sum of its proper divisors (698980).

1397954 is an equidigital number, since it uses as much as digits as its factorization.

1397954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698979.

The product of its digits is 34020, while the sum is 38.

The square root of 1397954 is about 1182.3510477011. The cubic root of 1397954 is about 111.8143715064.

The spelling of 1397954 in words is "one million, three hundred ninety-seven thousand, nine hundred fifty-four".