13989770 has 8 divisors (see below), whose sum is σ = 25181604. Its totient is φ = 5595904.

The previous prime is 13989763. The next prime is 13989791. The reversal of 13989770 is 7798931.

It can be written as a sum of positive squares in 2 ways, for example, as 13786369 + 203401 = 3713^2 + 451^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 699479 + ... + 699498.

Almost surely, 2^13989770 is an apocalyptic number.

13989770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13989770 is a deficient number, since it is larger than the sum of its proper divisors (11191834).

13989770 is a wasteful number, since it uses less digits than its factorization.

13989770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398984.

The product of its (nonzero) digits is 95256, while the sum is 44.

The square root of 13989770 is about 3740.2900957011. The cubic root of 13989770 is about 240.9555079336.

The spelling of 13989770 in words is "thirteen million, nine hundred eighty-nine thousand, seven hundred seventy".