1392147229 has 6 divisors (see below), whose sum is σ = 1530211550. Its totient is φ = 1265588280.

The previous prime is 1392147227. The next prime is 1392147241. The reversal of 1392147229 is 9227412931.

It can be written as a sum of positive squares in only one way, i.e., 822370329 + 569776900 = 28677^2 + 23870^2 .

It is not a de Polignac number, because 1392147229 - 2¹ = 1392147227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1392147191 and 1392147200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1392147227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5752554 + ... + 5752795.

Almost surely, 2^1392147229 is an apocalyptic number.

It is an amenable number.

1392147229 is a deficient number, since it is larger than the sum of its proper divisors (138064321).

1392147229 is a wasteful number, since it uses less digits than its factorization.

1392147229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11505371 (or 11505360 counting only the distinct ones).

The product of its digits is 54432, while the sum is 40.

The square root of 1392147229 is about 37311.4892358909. The cubic root of 1392147229 is about 1116.5933981580.

The spelling of 1392147229 in words is "one billion, three hundred ninety-two million, one hundred forty-seven thousand, two hundred twenty-nine".