1391226952 has 16 divisors (see below), whose sum is σ = 2610575100. Its totient is φ = 695073600.

The previous prime is 1391226913. The next prime is 1391226989. The reversal of 1391226952 is 2596221931.

It can be written as a sum of positive squares in 2 ways, for example, as 741690756 + 649536196 = 27234^2 + 25486^2 .

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 56427 + ... + 77242.

Almost surely, 2^1391226952 is an apocalyptic number.

It is an amenable number.

1391226952 is a deficient number, since it is larger than the sum of its proper divisors (1219348148).

1391226952 is a wasteful number, since it uses less digits than its factorization.

1391226952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134976 (or 134972 counting only the distinct ones).

The product of its digits is 58320, while the sum is 40.

The square root of 1391226952 is about 37299.1548429720. The cubic root of 1391226952 is about 1116.3473030826.

The spelling of 1391226952 in words is "one billion, three hundred ninety-one million, two hundred twenty-six thousand, nine hundred fifty-two".