450379999 has 4 divisors (see below), whose sum is σ = 453362800. Its totient is φ = 447397200.

The previous prime is 450379987. The next prime is 450380023. The reversal of 450379999 is 999973054.

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 450379999 - 2⁵ = 450379967 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 (450373999) 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, 1491174 + ... + 1491475.

It is an arithmetic number, because the mean of its divisors is an integer number (113340700).

Almost surely, 2^450379999 is an apocalyptic number.

450379999 is a deficient number, since it is larger than the sum of its proper divisors (2982801).

450379999 is a wasteful number, since it uses less digits than its factorization.

450379999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2982800.

The product of its (nonzero) digits is 2755620, while the sum is 55.

The square root of 450379999 is about 21222.1582078732. The cubic root of 450379999 is about 766.5250730529.

The spelling of 450379999 in words is "four hundred fifty million, three hundred seventy-nine thousand, nine hundred ninety-nine".