1387229904 has 30 divisors (see below), whose sum is σ = 3882317426. Its totient is φ = 462409920.

The previous prime is 1387229891. The next prime is 1387229911. The reversal of 1387229904 is 4099227831.

1387229904 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1358069904 + 29160000 = 36852^2 + 5400^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1387229904.

It is a congruent number.

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, 4816627 + ... + 4816914.

Almost surely, 2^1387229904 is an apocalyptic number.

It is an amenable number.

1387229904 is an abundant number, since it is smaller than the sum of its proper divisors (2495087522).

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

1387229904 is a wasteful number, since it uses less digits than its factorization.

1387229904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9633555 (or 9633546 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 1387229904 is about 37245.5353566035. The cubic root of 1387229904 is about 1115.2771748198.

The spelling of 1387229904 in words is "one billion, three hundred eighty-seven million, two hundred twenty-nine thousand, nine hundred four".