16953889 has 4 divisors (see below), whose sum is σ = 17083440. Its totient is φ = 16824340.

The previous prime is 16953883. The next prime is 16953899. The reversal of 16953889 is 98835961.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16953889 - 2⁵ = 16953857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16953883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64579 + ... + 64840.

It is an arithmetic number, because the mean of its divisors is an integer number (4270860).

Almost surely, 2^16953889 is an apocalyptic number.

It is an amenable number.

16953889 is a deficient number, since it is larger than the sum of its proper divisors (129551).

16953889 is a wasteful number, since it uses less digits than its factorization.

16953889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129550.

The product of its digits is 466560, while the sum is 49.

The square root of 16953889 is about 4117.5100485609. The cubic root of 16953889 is about 256.8954694076.

The spelling of 16953889 in words is "sixteen million, nine hundred fifty-three thousand, eight hundred eighty-nine".