1392407 has 2 divisors, whose sum is σ = 1392408. Its totient is φ = 1392406.

The previous prime is 1392379. The next prime is 1392431. The reversal of 1392407 is 7042931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1392407 - 2²⁰ = 343831 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1392497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696203 + 696204.

It is an arithmetic number, because the mean of its divisors is an integer number (696204).

2^1392407 is an apocalyptic number.

1392407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1392407 is an equidigital number, since it uses as much as digits as its factorization.

1392407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 1392407 is about 1180.0029660980. The cubic root of 1392407 is about 111.6662844966. Note that the first 3 decimals are identical.

The spelling of 1392407 in words is "one million, three hundred ninety-two thousand, four hundred seven".