1439225316 has 18 divisors (see below), whose sum is σ = 3638041862. Its totient is φ = 479741760.

The previous prime is 1439225279. The next prime is 1439225323. The reversal of 1439225316 is 6135229341.

1439225316 is a `hidden beast` number, since 1 + 4 + 392 + 253 + 16 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1135420416 + 303804900 = 33696^2 + 17430^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 39978481 = 1439225316 / (1 + 4 + 3 + 9 + 2 + 2 + 5 + 3 + 1 + 6).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19989205 + ... + 19989276.

Almost surely, 2^1439225316 is an apocalyptic number.

It is an amenable number.

1439225316 is an abundant number, since it is smaller than the sum of its proper divisors (2198816546).

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

1439225316 is a wasteful number, since it uses less digits than its factorization.

1439225316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39978491 (or 39978486 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 1439225316 is about 37937.1231908799. The cubic root of 1439225316 is about 1129.0406967897.

The spelling of 1439225316 in words is "one billion, four hundred thirty-nine million, two hundred twenty-five thousand, three hundred sixteen".