442615890 has 16 divisors (see below), whose sum is σ = 1062278208. Its totient is φ = 118030896.

The previous prime is 442615847. The next prime is 442615891. The reversal of 442615890 is 98516244.

It is not an unprimeable number, because it can be changed into a prime (442615891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7376902 + ... + 7376961.

It is an arithmetic number, because the mean of its divisors is an integer number (66392388).

Almost surely, 2^442615890 is an apocalyptic number.

442615890 is an abundant number, since it is smaller than the sum of its proper divisors (619662318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442615890 is a wasteful number, since it uses less digits than its factorization.

442615890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14753873.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 442615890 is about 21038.4383926184. The cubic root of 442615890 is about 762.0948036164.

The spelling of 442615890 in words is "four hundred forty-two million, six hundred fifteen thousand, eight hundred ninety".