13989735 has 12 divisors (see below), whose sum is σ = 24248952. Its totient is φ = 7461168.

The previous prime is 13989709. The next prime is 13989763. The reversal of 13989735 is 53798931.

It is a happy number.

It is not a de Polignac number, because 13989735 - 2¹² = 13985639 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 310883 = 13989735 / (1 + 3 + 9 + 8 + 9 + 7 + 3 + 5).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 155397 + ... + 155486.

It is an arithmetic number, because the mean of its divisors is an integer number (2020746).

Almost surely, 2^13989735 is an apocalyptic number.

13989735 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13989735 is a deficient number, since it is larger than the sum of its proper divisors (10259217).

13989735 is a wasteful number, since it uses less digits than its factorization.

13989735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310894 (or 310891 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 13989735 is about 3740.2854169167. The cubic root of 13989735 is about 240.9553069904.

The spelling of 13989735 in words is "thirteen million, nine hundred eighty-nine thousand, seven hundred thirty-five".