97963913 has 4 divisors (see below), whose sum is σ = 97994448. Its totient is φ = 97933380.

The previous prime is 97963909. The next prime is 97963961. The reversal of 97963913 is 31936979.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31936979 = 503 ⋅63493.

It is a cyclic number.

It is not a de Polignac number, because 97963913 - 2² = 97963909 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97963903) 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, 9803 + ... + 17088.

It is an arithmetic number, because the mean of its divisors is an integer number (24498612).

Almost surely, 2^97963913 is an apocalyptic number.

It is an amenable number.

97963913 is a deficient number, since it is larger than the sum of its proper divisors (30535).

97963913 is a wasteful number, since it uses less digits than its factorization.

97963913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30534.

The product of its digits is 275562, while the sum is 47.

The square root of 97963913 is about 9897.6721000445. The cubic root of 97963913 is about 460.9870315050.

The spelling of 97963913 in words is "ninety-seven million, nine hundred sixty-three thousand, nine hundred thirteen".