97909898 has 4 divisors (see below), whose sum is σ = 146864850. Its totient is φ = 48954948.

The previous prime is 97909897. The next prime is 97909901. The reversal of 97909898 is 89890979.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 52171729 + 45738169 = 7223^2 + 6763^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (97909891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24477473 + ... + 24477476.

Almost surely, 2^97909898 is an apocalyptic number.

97909898 is a deficient number, since it is larger than the sum of its proper divisors (48954952).

97909898 is a wasteful number, since it uses less digits than its factorization.

97909898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48954951.

The product of its (nonzero) digits is 2939328, while the sum is 59.

The square root of 97909898 is about 9894.9430518826. The cubic root of 97909898 is about 460.9022901221.

The spelling of 97909898 in words is "ninety-seven million, nine hundred nine thousand, eight hundred ninety-eight".