405472490 has 32 divisors (see below), whose sum is σ = 767428560. Its totient is φ = 154022400.

The previous prime is 405472489. The next prime is 405472511. The reversal of 405472490 is 94274504.

It can be written as a sum of positive squares in 8 ways, for example, as 64368529 + 341103961 = 8023^2 + 18469^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 405472490.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6230 + ... + 29150.

Almost surely, 2^405472490 is an apocalyptic number.

405472490 is a deficient number, since it is larger than the sum of its proper divisors (361956070).

405472490 is a wasteful number, since it uses less digits than its factorization.

405472490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23018.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 405472490 is about 20136.3474840896. The cubic root of 405472490 is about 740.1512291360.

The spelling of 405472490 in words is "four hundred five million, four hundred seventy-two thousand, four hundred ninety".