1374639 has 16 divisors (see below), whose sum is σ = 2128128. Its totient is φ = 772992.

The previous prime is 1374619. The next prime is 1374673. The reversal of 1374639 is 9364731.

It is not a de Polignac number, because 1374639 - 2⁷ = 1374511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1374619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 919 + ... + 1895.

It is an arithmetic number, because the mean of its divisors is an integer number (133008).

2^1374639 is an apocalyptic number.

1374639 is a deficient number, since it is larger than the sum of its proper divisors (753489).

1374639 is an equidigital number, since it uses as much as digits as its factorization.

1374639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054.

The product of its digits is 13608, while the sum is 33.

The square root of 1374639 is about 1172.4499989339. The cubic root of 1374639 is about 111.1892720789.

The spelling of 1374639 in words is "one million, three hundred seventy-four thousand, six hundred thirty-nine".