1391489296 has 20 divisors (see below), whose sum is σ = 2708794384. Its totient is φ = 692445600.

The previous prime is 1391489293. The next prime is 1391489327. The reversal of 1391489296 is 6929841931.

It is not an unprimeable number, because it can be changed into a prime (1391489291) 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, 202710 + ... + 209461.

Almost surely, 2^1391489296 is an apocalyptic number.

1391489296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1391489296 is a deficient number, since it is larger than the sum of its proper divisors (1317305088).

1391489296 is a wasteful number, since it uses less digits than its factorization.

1391489296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412390 (or 412384 counting only the distinct ones).

The product of its digits is 839808, while the sum is 52.

The square root of 1391489296 is about 37302.6714324859. The cubic root of 1391489296 is about 1116.4174686320.

The spelling of 1391489296 in words is "one billion, three hundred ninety-one million, four hundred eighty-nine thousand, two hundred ninety-six".