1399497 has 8 divisors (see below), whose sum is σ = 2035680. Its totient is φ = 848160.

The previous prime is 1399493. The next prime is 1399499. The reversal of 1399497 is 7949931.

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

It is not a de Polignac number, because 1399497 - 2² = 1399493 is a prime.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (1399493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21172 + ... + 21237.

It is an arithmetic number, because the mean of its divisors is an integer number (254460).

2^1399497 is an apocalyptic number.

It is an amenable number.

1399497 is a deficient number, since it is larger than the sum of its proper divisors (636183).

1399497 is a wasteful number, since it uses less digits than its factorization.

1399497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42423.

The product of its digits is 61236, while the sum is 42.

The square root of 1399497 is about 1183.0033812293. The cubic root of 1399497 is about 111.8554949714.

The spelling of 1399497 in words is "one million, three hundred ninety-nine thousand, four hundred ninety-seven".