97423409 has 2 divisors, whose sum is σ = 97423410. Its totient is φ = 97423408.

The previous prime is 97423387. The next prime is 97423429. The reversal of 97423409 is 90432479.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53333809 + 44089600 = 7303^2 + 6640^2 .

It is a cyclic number.

It is not a de Polignac number, because 97423409 - 2⁸ = 97423153 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (97423429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48711704 + 48711705.

It is an arithmetic number, because the mean of its divisors is an integer number (48711705).

Almost surely, 2^97423409 is an apocalyptic number.

It is an amenable number.

97423409 is a deficient number, since it is larger than the sum of its proper divisors (1).

97423409 is an equidigital number, since it uses as much as digits as its factorization.

97423409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 97423409 is about 9870.3297310678. The cubic root of 97423409 is about 460.1376541403.

The spelling of 97423409 in words is "ninety-seven million, four hundred twenty-three thousand, four hundred nine".