442949899 has 4 divisors (see below), whose sum is σ = 506228464. Its totient is φ = 379671336.

The previous prime is 442949879. The next prime is 442949929. The reversal of 442949899 is 998949244.

It is a happy number.

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 442949899 - 2¹⁹ = 442425611 is a prime.

It is a super-2 number, since 2×442949899² = 392409226048220402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (442949849) 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, 31639272 + ... + 31639285.

It is an arithmetic number, because the mean of its divisors is an integer number (126557116).

Almost surely, 2^442949899 is an apocalyptic number.

442949899 is a deficient number, since it is larger than the sum of its proper divisors (63278565).

442949899 is an equidigital number, since it uses as much as digits as its factorization.

442949899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63278564.

The product of its digits is 6718464, while the sum is 58.

The square root of 442949899 is about 21046.3749610236. The cubic root of 442949899 is about 762.2864540044.

The spelling of 442949899 in words is "four hundred forty-two million, nine hundred forty-nine thousand, eight hundred ninety-nine".