406780898 has 12 divisors (see below), whose sum is σ = 637855638. Its totient is φ = 194546880.

The previous prime is 406780897. The next prime is 406780909. The reversal of 406780898 is 898087604.

It can be written as a sum of positive squares in only one way, i.e., 209294089 + 197486809 = 14467^2 + 14053^2 .

It is not an unprimeable number, because it can be changed into a prime (406780897) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 191183 + ... + 193298.

Almost surely, 2^406780898 is an apocalyptic number.

406780898 is a deficient number, since it is larger than the sum of its proper divisors (231074740).

406780898 is a wasteful number, since it uses less digits than its factorization.

406780898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384529 (or 384506 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 50.

The square root of 406780898 is about 20168.8100293498. The cubic root of 406780898 is about 740.9464988694.

The spelling of 406780898 in words is "four hundred six million, seven hundred eighty thousand, eight hundred ninety-eight".