1392623 has 4 divisors (see below), whose sum is σ = 1474560. Its totient is φ = 1310688.

The previous prime is 1392619. The next prime is 1392631. The reversal of 1392623 is 3262931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1392623 - 2² = 1392619 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1392592 and 1392601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1392323) 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, 40943 + ... + 40976.

It is an arithmetic number, because the mean of its divisors is an integer number (368640).

2^1392623 is an apocalyptic number.

1392623 is a deficient number, since it is larger than the sum of its proper divisors (81937).

1392623 is an equidigital number, since it uses as much as digits as its factorization.

1392623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81936.

The product of its digits is 1944, while the sum is 26.

The square root of 1392623 is about 1180.0944877424. The cubic root of 1392623 is about 111.6720583521.

The spelling of 1392623 in words is "one million, three hundred ninety-two thousand, six hundred twenty-three".