1400397 has 8 divisors (see below), whose sum is σ = 1878240. Its totient is φ = 928080.

The previous prime is 1400387. The next prime is 1400411. The reversal of 1400397 is 7930041.

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

It is not a de Polignac number, because 1400397 - 2⁸ = 1400141 is a prime.

It is a super-2 number, since 2×1400397² = 3922223515218, which contains 22 as substring.

1400397 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 747 + ... + 1832.

It is an arithmetic number, because the mean of its divisors is an integer number (234780).

2^1400397 is an apocalyptic number.

It is an amenable number.

1400397 is a deficient number, since it is larger than the sum of its proper divisors (477843).

1400397 is a wasteful number, since it uses less digits than its factorization.

1400397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2763.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 1400397 is about 1183.3837078480. The cubic root of 1400397 is about 111.8794674828.

The spelling of 1400397 in words is "one million, four hundred thousand, three hundred ninety-seven".