1399057 has 8 divisors (see below), whose sum is σ = 1536480. Its totient is φ = 1263360.

The previous prime is 1399039. The next prime is 1399063. The reversal of 1399057 is 7509931.

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

It is a cyclic number.

It is not a de Polignac number, because 1399057 - 2¹⁵ = 1366289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1399037) 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, 1794 + ... + 2452.

It is an arithmetic number, because the mean of its divisors is an integer number (192060).

2^1399057 is an apocalyptic number.

It is an amenable number.

1399057 is a deficient number, since it is larger than the sum of its proper divisors (137423).

1399057 is a wasteful number, since it uses less digits than its factorization.

1399057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863.

The product of its (nonzero) digits is 8505, while the sum is 34.

The square root of 1399057 is about 1182.8173992633. The cubic root of 1399057 is about 111.8437713363.

The spelling of 1399057 in words is "one million, three hundred ninety-nine thousand, fifty-seven".