13909057 has 8 divisors (see below), whose sum is σ = 14210784. Its totient is φ = 13610688.

The previous prime is 13909033. The next prime is 13909061. The reversal of 13909057 is 75090931.

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

It is a cyclic number.

It is not a de Polignac number, because 13909057 - 2¹¹ = 13907009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13909087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8638 + ... + 10120.

It is an arithmetic number, because the mean of its divisors is an integer number (1776348).

Almost surely, 2^13909057 is an apocalyptic number.

It is an amenable number.

13909057 is a deficient number, since it is larger than the sum of its proper divisors (301727).

13909057 is a wasteful number, since it uses less digits than its factorization.

13909057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1679.

The product of its (nonzero) digits is 8505, while the sum is 34.

The square root of 13909057 is about 3729.4848169687. The cubic root of 13909057 is about 240.4912219110.

Adding to 13909057 its reverse (75090931), we get a palindrome (88999988).

The spelling of 13909057 in words is "thirteen million, nine hundred nine thousand, fifty-seven".