16398957 has 8 divisors (see below), whose sum is σ = 23016160. Its totient is φ = 10357200.

The previous prime is 16398947. The next prime is 16398959. The reversal of 16398957 is 75989361.

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

It is not a de Polignac number, because 16398957 - 2¹⁰ = 16397933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16398959) 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, 143794 + ... + 143907.

It is an arithmetic number, because the mean of its divisors is an integer number (2877020).

Almost surely, 2^16398957 is an apocalyptic number.

It is an amenable number.

16398957 is a deficient number, since it is larger than the sum of its proper divisors (6617203).

16398957 is a wasteful number, since it uses less digits than its factorization.

16398957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287723.

The product of its digits is 408240, while the sum is 48.

The square root of 16398957 is about 4049.5625689696. The cubic root of 16398957 is about 254.0614324303.

The spelling of 16398957 in words is "sixteen million, three hundred ninety-eight thousand, nine hundred fifty-seven".