1391449312 has 24 divisors (see below), whose sum is σ = 2988454392. Its totient is φ = 632476800.

The previous prime is 1391449307. The next prime is 1391449321. The reversal of 1391449312 is 2139441931.

It is a happy number.

It is a super-2 number, since 2×1391449312² = 3872262375730546688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1976139 + ... + 1976842.

It is an arithmetic number, because the mean of its divisors is an integer number (124518933).

Almost surely, 2^1391449312 is an apocalyptic number.

It is an amenable number.

1391449312 is an abundant number, since it is smaller than the sum of its proper divisors (1597005080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1391449312 is a wasteful number, since it uses less digits than its factorization.

1391449312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3953002 (or 3952994 counting only the distinct ones).

The product of its digits is 23328, while the sum is 37.

The square root of 1391449312 is about 37302.1354884677. The cubic root of 1391449312 is about 1116.4067752299.

The spelling of 1391449312 in words is "one billion, three hundred ninety-one million, four hundred forty-nine thousand, three hundred twelve".