1389929370 has 32 divisors (see below), whose sum is σ = 3382819200. Its totient is φ = 365426880.

The previous prime is 1389929369. The next prime is 1389929389. The reversal of 1389929370 is 739299831.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 324145 + ... + 328404.

It is an arithmetic number, because the mean of its divisors is an integer number (105713100).

Almost surely, 2^1389929370 is an apocalyptic number.

1389929370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1389929370 is an abundant number, since it is smaller than the sum of its proper divisors (1992889830).

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

1389929370 is a wasteful number, since it uses less digits than its factorization.

1389929370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652630.

The product of its (nonzero) digits is 734832, while the sum is 51.

The square root of 1389929370 is about 37281.7565305070. The cubic root of 1389929370 is about 1116.0001268612. Note that the first 3 decimals are identical.

The spelling of 1389929370 in words is "one billion, three hundred eighty-nine million, nine hundred twenty-nine thousand, three hundred seventy".