97509402 has 12 divisors (see below), whose sum is σ = 211270410. Its totient is φ = 32503128.

The previous prime is 97509389. The next prime is 97509407. The reversal of 97509402 is 20490579.

It can be written as a sum of positive squares in only one way, i.e., 73977201 + 23532201 = 8601^2 + 4851^2 .

It is not an unprimeable number, because it can be changed into a prime (97509407) 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, 2708577 + ... + 2708612.

Almost surely, 2^97509402 is an apocalyptic number.

97509402 is an abundant number, since it is smaller than the sum of its proper divisors (113761008).

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

97509402 is a wasteful number, since it uses less digits than its factorization.

97509402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5417197 (or 5417194 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 97509402 is about 9874.6849063654. The cubic root of 97509402 is about 460.2729980012.

The spelling of 97509402 in words is "ninety-seven million, five hundred nine thousand, four hundred two".