1399437 has 24 divisors (see below), whose sum is σ = 2262624. Its totient is φ = 859248.

The previous prime is 1399427. The next prime is 1399439. The reversal of 1399437 is 7349931.

It is not a de Polignac number, because 1399437 - 2⁶ = 1399373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399439) 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 23 ways as a sum of consecutive naturals, for example, 2938 + ... + 3380.

It is an arithmetic number, because the mean of its divisors is an integer number (94276).

2^1399437 is an apocalyptic number.

It is an amenable number.

1399437 is a deficient number, since it is larger than the sum of its proper divisors (863187).

1399437 is an equidigital number, since it uses as much as digits as its factorization.

1399437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471 (or 459 counting only the distinct ones).

The product of its digits is 20412, while the sum is 36.

The square root of 1399437 is about 1182.9780217739. The cubic root of 1399437 is about 111.8538964386.

The spelling of 1399437 in words is "one million, three hundred ninety-nine thousand, four hundred thirty-seven".