97509967 has 4 divisors (see below), whose sum is σ = 97753536. Its totient is φ = 97266400.

The previous prime is 97509959. The next prime is 97509989. The reversal of 97509967 is 76990579.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76990579 = 41 ⋅1877819.

It is a cyclic number.

It is not a de Polignac number, because 97509967 - 2³ = 97509959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97509917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121183 + ... + 121984.

It is an arithmetic number, because the mean of its divisors is an integer number (24438384).

Almost surely, 2^97509967 is an apocalyptic number.

97509967 is a deficient number, since it is larger than the sum of its proper divisors (243569).

97509967 is a wasteful number, since it uses less digits than its factorization.

97509967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243568.

The product of its (nonzero) digits is 1071630, while the sum is 52.

The square root of 97509967 is about 9874.7135148317. The cubic root of 97509967 is about 460.2738869881.

The spelling of 97509967 in words is "ninety-seven million, five hundred nine thousand, nine hundred sixty-seven".