1392372147 has 4 divisors (see below), whose sum is σ = 1856496200. Its totient is φ = 928248096.

The previous prime is 1392372139. The next prime is 1392372151. The reversal of 1392372147 is 7412732931.

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

It is not a de Polignac number, because 1392372147 - 2³ = 1392372139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1392372167) 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, 232062022 + ... + 232062027.

It is an arithmetic number, because the mean of its divisors is an integer number (464124050).

Almost surely, 2^1392372147 is an apocalyptic number.

1392372147 is a deficient number, since it is larger than the sum of its proper divisors (464124053).

1392372147 is an equidigital number, since it uses as much as digits as its factorization.

1392372147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464124052.

The product of its digits is 63504, while the sum is 39.

The square root of 1392372147 is about 37314.5031723591. The cubic root of 1392372147 is about 1116.6535279165.

The spelling of 1392372147 in words is "one billion, three hundred ninety-two million, three hundred seventy-two thousand, one hundred forty-seven".