16252399 has 4 divisors (see below), whose sum is σ = 16266280. Its totient is φ = 16238520.

The previous prime is 16252393. The next prime is 16252403. The reversal of 16252399 is 99325261.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16252399 - 2⁹ = 16251887 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 (16252393) 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, 5004 + ... + 7585.

It is an arithmetic number, because the mean of its divisors is an integer number (4066570).

Almost surely, 2^16252399 is an apocalyptic number.

16252399 is a deficient number, since it is larger than the sum of its proper divisors (13881).

16252399 is a wasteful number, since it uses less digits than its factorization.

16252399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13880.

The product of its digits is 29160, while the sum is 37.

The square root of 16252399 is about 4031.4264224961. The cubic root of 16252399 is about 253.3023148002.

The spelling of 16252399 in words is "sixteen million, two hundred fifty-two thousand, three hundred ninety-nine".