997471098 has 40 divisors (see below), whose sum is σ = 2407007988. Its totient is φ = 306913536.

The previous prime is 997471093. The next prime is 997471109. The reversal of 997471098 is 890174799.

It can be written as a sum of positive squares in 2 ways, for example, as 968018769 + 29452329 = 31113^2 + 5427^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (997471091) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 234711 + ... + 238922.

Almost surely, 2^997471098 is an apocalyptic number.

997471098 is an abundant number, since it is smaller than the sum of its proper divisors (1409536890).

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

997471098 is a wasteful number, since it uses less digits than its factorization.

997471098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473660 (or 473651 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 54.

The square root of 997471098 is about 31582.7658383492. The cubic root of 997471098 is about 999.1563210727.

The spelling of 997471098 in words is "nine hundred ninety-seven million, four hundred seventy-one thousand, ninety-eight".