445942290 has 16 divisors (see below), whose sum is σ = 1070261568. Its totient is φ = 118917936.

The previous prime is 445942253. The next prime is 445942291. The reversal of 445942290 is 92249544.

It is not an unprimeable number, because it can be changed into a prime (445942291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7432342 + ... + 7432401.

It is an arithmetic number, because the mean of its divisors is an integer number (66891348).

Almost surely, 2^445942290 is an apocalyptic number.

445942290 is an abundant number, since it is smaller than the sum of its proper divisors (624319278).

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

445942290 is a wasteful number, since it uses less digits than its factorization.

445942290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14864753.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 445942290 is about 21117.3457138912. The cubic root of 445942290 is about 763.9991696582. Note that the first 3 decimals are identical.

The spelling of 445942290 in words is "four hundred forty-five million, nine hundred forty-two thousand, two hundred ninety".