97470509 has 2 divisors, whose sum is σ = 97470510. Its totient is φ = 97470508.

The previous prime is 97470383. The next prime is 97470533. The reversal of 97470509 is 90507479.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58094884 + 39375625 = 7622^2 + 6275^2 .

It is a cyclic number.

It is not a de Polignac number, because 97470509 - 2¹⁶ = 97404973 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97470539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48735254 + 48735255.

It is an arithmetic number, because the mean of its divisors is an integer number (48735255).

Almost surely, 2^97470509 is an apocalyptic number.

It is an amenable number.

97470509 is a deficient number, since it is larger than the sum of its proper divisors (1).

97470509 is an equidigital number, since it uses as much as digits as its factorization.

97470509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79380, while the sum is 41.

The square root of 97470509 is about 9872.7153812920. The cubic root of 97470509 is about 460.2117944046.

It can be divided in two parts, 97470 and 509, that added together give a palindrome (97979).

The spelling of 97470509 in words is "ninety-seven million, four hundred seventy thousand, five hundred nine".