16399495 has 8 divisors (see below), whose sum is σ = 22490784. Its totient is φ = 11245344.

The previous prime is 16399477. The next prime is 16399507. The reversal of 16399495 is 59499361.

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

It is a cyclic number.

It is not a de Polignac number, because 16399495 - 2⁹ = 16398983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234244 + ... + 234313.

It is an arithmetic number, because the mean of its divisors is an integer number (2811348).

Almost surely, 2^16399495 is an apocalyptic number.

16399495 is a deficient number, since it is larger than the sum of its proper divisors (6091289).

16399495 is an equidigital number, since it uses as much as digits as its factorization.

16399495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468569.

The product of its digits is 262440, while the sum is 46.

The square root of 16399495 is about 4049.6289953525. The cubic root of 16399495 is about 254.0642107281.

The spelling of 16399495 in words is "sixteen million, three hundred ninety-nine thousand, four hundred ninety-five".