16423797 has 8 divisors (see below), whose sum is σ = 23582944. Its totient is φ = 10106928.

The previous prime is 16423789. The next prime is 16423801. The reversal of 16423797 is 79732461.

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

It is not a de Polignac number, because 16423797 - 2³ = 16423789 is a prime.

It is a super-2 number, since 2×16423797² = 539482215794418, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 421123 = 16423797 / (1 + 6 + 4 + 2 + 3 + 7 + 9 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16423747) 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, 210523 + ... + 210600.

It is an arithmetic number, because the mean of its divisors is an integer number (2947868).

Almost surely, 2^16423797 is an apocalyptic number.

It is an amenable number.

16423797 is a deficient number, since it is larger than the sum of its proper divisors (7159147).

16423797 is a wasteful number, since it uses less digits than its factorization.

16423797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421139.

The product of its digits is 63504, while the sum is 39.

The square root of 16423797 is about 4052.6284063556. The cubic root of 16423797 is about 254.1896459143.

The spelling of 16423797 in words is "sixteen million, four hundred twenty-three thousand, seven hundred ninety-seven".