16049999 has 16 divisors (see below), whose sum is σ = 19003200. Its totient is φ = 13547520.

The previous prime is 16049987. The next prime is 16050007. The reversal of 16049999 is 99994061.

It is a de Polignac number, because none of the positive numbers 2^k-16049999 is a prime.

It is a Duffinian number.

16049999 is a modest number, since divided by 9999 gives 1604 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16049939) 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, 24719 + ... + 25359.

It is an arithmetic number, because the mean of its divisors is an integer number (1187700).

Almost surely, 2^16049999 is an apocalyptic number.

16049999 is a deficient number, since it is larger than the sum of its proper divisors (2953201).

16049999 is an frugal number, since it uses more digits than its factorization.

16049999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735 (or 721 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 47.

The square root of 16049999 is about 4006.2449999969. The cubic root of 16049999 is about 252.2464153456.

The spelling of 16049999 in words is "sixteen million, forty-nine thousand, nine hundred ninety-nine".