16459949 has 4 divisors (see below), whose sum is σ = 17956320. Its totient is φ = 14963580.

The previous prime is 16459943. The next prime is 16459951. The reversal of 16459949 is 94995461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94995461 = 11 ⋅8635951.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16459949 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 (16459943) 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, 748169 + ... + 748190.

It is an arithmetic number, because the mean of its divisors is an integer number (4489080).

Almost surely, 2^16459949 is an apocalyptic number.

It is an amenable number.

16459949 is a deficient number, since it is larger than the sum of its proper divisors (1496371).

16459949 is a wasteful number, since it uses less digits than its factorization.

16459949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496370.

The product of its digits is 349920, while the sum is 47.

The square root of 16459949 is about 4057.0862697261. The cubic root of 16459949 is about 254.3760163317.

The spelling of 16459949 in words is "sixteen million, four hundred fifty-nine thousand, nine hundred forty-nine".