97470309 has 4 divisors (see below), whose sum is σ = 129960416. Its totient is φ = 64980204.

The previous prime is 97470277. The next prime is 97470319. The reversal of 97470309 is 90307479.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 97470309 - 2⁵ = 97470277 is a prime.

It is a super-2 number, since 2×97470309² = 19000922273110962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97470319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16245049 + ... + 16245054.

It is an arithmetic number, because the mean of its divisors is an integer number (32490104).

Almost surely, 2^97470309 is an apocalyptic number.

It is an amenable number.

97470309 is a deficient number, since it is larger than the sum of its proper divisors (32490107).

97470309 is a wasteful number, since it uses less digits than its factorization.

97470309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32490106.

The product of its (nonzero) digits is 47628, while the sum is 39.

The square root of 97470309 is about 9872.7052523612. The cubic root of 97470309 is about 460.2114796344.

It can be divided in two parts, 97470 and 309, that added together give a palindrome (97779).

The spelling of 97470309 in words is "ninety-seven million, four hundred seventy thousand, three hundred nine".