947398998 has 128 divisors (see below), whose sum is σ = 2427715584. Its totient is φ = 239760000.

The previous prime is 947398981. The next prime is 947399027. The reversal of 947398998 is 899893749.

It is a super-2 number, since 2×947398998² = 1795129722822808008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3774373 + ... + 3774623.

It is an arithmetic number, because the mean of its divisors is an integer number (18966528).

Almost surely, 2^947398998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 947398998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1213857792).

947398998 is an abundant number, since it is smaller than the sum of its proper divisors (1480316586).

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

947398998 is a wasteful number, since it uses less digits than its factorization.

947398998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530.

The product of its digits is 35271936, while the sum is 66.

The square root of 947398998 is about 30779.8472705762. The cubic root of 947398998 is about 982.1495915177.

The spelling of 947398998 in words is "nine hundred forty-seven million, three hundred ninety-eight thousand, nine hundred ninety-eight".