16169397 has 8 divisors (see below), whose sum is σ = 22827456. Its totient is φ = 10145472.

The previous prime is 16169389. The next prime is 16169401. The reversal of 16169397 is 79396161.

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

It is not a de Polignac number, because 16169397 - 2³ = 16169389 is a prime.

It is a super-2 number, since 2×16169397² = 522898798687218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16169317) 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, 158473 + ... + 158574.

It is an arithmetic number, because the mean of its divisors is an integer number (2853432).

Almost surely, 2^16169397 is an apocalyptic number.

16169397 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16169397 is a deficient number, since it is larger than the sum of its proper divisors (6658059).

16169397 is a wasteful number, since it uses less digits than its factorization.

16169397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317067.

The product of its digits is 61236, while the sum is 42.

The square root of 16169397 is about 4021.1188741444. The cubic root of 16169397 is about 252.8703684778.

The spelling of 16169397 in words is "sixteen million, one hundred sixty-nine thousand, three hundred ninety-seven".