416666988 has 72 divisors (see below), whose sum is σ = 1109541888. Its totient is φ = 131580768.

The previous prime is 416666981. The next prime is 416666989. The reversal of 416666988 is 889666614.

It is a super-2 number, since 2×416666988² = 347222757777984288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (416666981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86245 + ... + 90947.

It is an arithmetic number, because the mean of its divisors is an integer number (15410304).

Almost surely, 2^416666988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 416666988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (554770944).

416666988 is an abundant number, since it is smaller than the sum of its proper divisors (692874900).

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

416666988 is a wasteful number, since it uses less digits than its factorization.

416666988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4843 (or 4838 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 416666988 is about 20412.4223942187. The cubic root of 416666988 is about 746.9009830961.

The spelling of 416666988 in words is "four hundred sixteen million, six hundred sixty-six thousand, nine hundred eighty-eight".