16223397 has 16 divisors (see below), whose sum is σ = 22883520. Its totient is φ = 10195200.

The previous prime is 16223393. The next prime is 16223401. The reversal of 16223397 is 79332261.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16223393) and next prime (16223401).

It is not a de Polignac number, because 16223397 - 2² = 16223393 is a prime.

It is a super-2 number, since 2×16223397² = 526397220439218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16223393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13147 + ... + 14327.

It is an arithmetic number, because the mean of its divisors is an integer number (1430220).

Almost surely, 2^16223397 is an apocalyptic number.

It is an amenable number.

16223397 is a deficient number, since it is larger than the sum of its proper divisors (6660123).

16223397 is a wasteful number, since it uses less digits than its factorization.

16223397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444.

The product of its digits is 13608, while the sum is 33.

The square root of 16223397 is about 4027.8278265090. The cubic root of 16223397 is about 253.1515545377.

The spelling of 16223397 in words is "sixteen million, two hundred twenty-three thousand, three hundred ninety-seven".