445657930 has 8 divisors (see below), whose sum is σ = 802184292. Its totient is φ = 178263168.

The previous prime is 445657921. The next prime is 445657967. The reversal of 445657930 is 39756544.

It can be written as a sum of positive squares in 2 ways, for example, as 408484521 + 37173409 = 20211^2 + 6097^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×445657930² = 397221981143769800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22282887 + ... + 22282906.

Almost surely, 2^445657930 is an apocalyptic number.

445657930 is a deficient number, since it is larger than the sum of its proper divisors (356526362).

445657930 is a wasteful number, since it uses less digits than its factorization.

445657930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44565800.

The product of its (nonzero) digits is 453600, while the sum is 43.

The square root of 445657930 is about 21110.6117864926. The cubic root of 445657930 is about 763.8367443081.

The spelling of 445657930 in words is "four hundred forty-five million, six hundred fifty-seven thousand, nine hundred thirty".