1391150444 has 6 divisors (see below), whose sum is σ = 2434513284. Its totient is φ = 695575220.

The previous prime is 1391150401. The next prime is 1391150473. The reversal of 1391150444 is 4440511931.

It is a self number, because there is not a number n which added to its sum of digits gives 1391150444.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173893802 + ... + 173893809.

It is an arithmetic number, because the mean of its divisors is an integer number (405752214).

Almost surely, 2^1391150444 is an apocalyptic number.

It is an amenable number.

1391150444 is a deficient number, since it is larger than the sum of its proper divisors (1043362840).

1391150444 is a wasteful number, since it uses less digits than its factorization.

1391150444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347787615 (or 347787613 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 1391150444 is about 37298.1292292254. The cubic root of 1391150444 is about 1116.3268388766.

The spelling of 1391150444 in words is "one billion, three hundred ninety-one million, one hundred fifty thousand, four hundred forty-four".