1679449899 has 16 divisors (see below), whose sum is σ = 2271859200. Its totient is φ = 1103363136.

The previous prime is 1679449879. The next prime is 1679449901. The reversal of 1679449899 is 9989449761.

It is not a de Polignac number, because 1679449899 - 2⁵ = 1679449867 is a prime.

It is a super-2 number, since 2×1679449899² = 5641103926502220402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1679449819) 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, 338962 + ... + 343880.

It is an arithmetic number, because the mean of its divisors is an integer number (141991200).

Almost surely, 2^1679449899 is an apocalyptic number.

1679449899 is a deficient number, since it is larger than the sum of its proper divisors (592409301).

1679449899 is a wasteful number, since it uses less digits than its factorization.

1679449899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6554.

The product of its digits is 35271936, while the sum is 66.

The square root of 1679449899 is about 40981.0919693461. The cubic root of 1679449899 is about 1188.6546241098.

The spelling of 1679449899 in words is "one billion, six hundred seventy-nine million, four hundred forty-nine thousand, eight hundred ninety-nine".