1396649 has 4 divisors (see below), whose sum is σ = 1403136. Its totient is φ = 1390164.

The previous prime is 1396627. The next prime is 1396657. The reversal of 1396649 is 9466931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1396649 - 2⁸ = 1396393 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1396679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2909 + ... + 3354.

It is an arithmetic number, because the mean of its divisors is an integer number (350784).

2^1396649 is an apocalyptic number.

It is an amenable number.

1396649 is a deficient number, since it is larger than the sum of its proper divisors (6487).

1396649 is an equidigital number, since it uses as much as digits as its factorization.

1396649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6486.

The product of its digits is 34992, while the sum is 38.

The square root of 1396649 is about 1181.7990522927. The cubic root of 1396649 is about 111.7795675039.

The spelling of 1396649 in words is "one million, three hundred ninety-six thousand, six hundred forty-nine".