97636399 has 4 divisors (see below), whose sum is σ = 111584464. Its totient is φ = 83688336.

The previous prime is 97636387. The next prime is 97636439. The reversal of 97636399 is 99363679.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 97636399 - 2⁵ = 97636367 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 (97636309) 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, 6974022 + ... + 6974035.

It is an arithmetic number, because the mean of its divisors is an integer number (27896116).

Almost surely, 2^97636399 is an apocalyptic number.

97636399 is a deficient number, since it is larger than the sum of its proper divisors (13948065).

97636399 is a wasteful number, since it uses less digits than its factorization.

97636399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13948064.

The product of its digits is 1653372, while the sum is 52.

The square root of 97636399 is about 9881.1132469980. The cubic root of 97636399 is about 460.4727323529.

The spelling of 97636399 in words is "ninety-seven million, six hundred thirty-six thousand, three hundred ninety-nine".