1392906247 has 2 divisors, whose sum is σ = 1392906248. Its totient is φ = 1392906246.

The previous prime is 1392906239. The next prime is 1392906253. The reversal of 1392906247 is 7426092931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1392906247 - 2³ = 1392906239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1392906217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696453123 + 696453124.

It is an arithmetic number, because the mean of its divisors is an integer number (696453124).

Almost surely, 2^1392906247 is an apocalyptic number.

1392906247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1392906247 is an equidigital number, since it uses as much as digits as its factorization.

1392906247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 1392906247 is about 37321.6592208867. The cubic root of 1392906247 is about 1116.7962886979.

The spelling of 1392906247 in words is "one billion, three hundred ninety-two million, nine hundred six thousand, two hundred forty-seven".