447380690 has 32 divisors (see below), whose sum is σ = 834712560. Its totient is φ = 172502784.

The previous prime is 447380671. The next prime is 447380693. The reversal of 447380690 is 96083744.

It can be written as a sum of positive squares in 8 ways, for example, as 396129409 + 51251281 = 19903^2 + 7159^2 .

It is a super-2 number, since 2×447380690² = 400298963569752200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (447380693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34784 + ... + 45876.

Almost surely, 2^447380690 is an apocalyptic number.

447380690 is a deficient number, since it is larger than the sum of its proper divisors (387331870).

447380690 is a wasteful number, since it uses less digits than its factorization.

447380690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11246.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 447380690 is about 21151.3756053832. The cubic root of 447380690 is about 764.8197219975.

The spelling of 447380690 in words is "four hundred forty-seven million, three hundred eighty thousand, six hundred ninety".