1392634 has 4 divisors (see below), whose sum is σ = 2088954. Its totient is φ = 696316.

The previous prime is 1392631. The next prime is 1392649. The reversal of 1392634 is 4362931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4362931 = 17 ⋅256643.

It can be written as a sum of positive squares in only one way, i.e., 1203409 + 189225 = 1097^2 + 435^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1392631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348157 + ... + 348160.

2^1392634 is an apocalyptic number.

1392634 is a deficient number, since it is larger than the sum of its proper divisors (696320).

1392634 is an equidigital number, since it uses as much as digits as its factorization.

1392634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696319.

The product of its digits is 3888, while the sum is 28.

The square root of 1392634 is about 1180.0991483769. The cubic root of 1392634 is about 111.6723523750.

The spelling of 1392634 in words is "one million, three hundred ninety-two thousand, six hundred thirty-four".