97813399 has 2 divisors, whose sum is σ = 97813400. Its totient is φ = 97813398.

The previous prime is 97813381. The next prime is 97813423. The reversal of 97813399 is 99331879.

It is a weak prime.

It is an emirp because it is prime and its reverse (99331879) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97813399 - 2⁷ = 97813271 is a prime.

It is a super-2 number, since 2×97813399² = 19134922047866402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97813369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48906699 + 48906700.

It is an arithmetic number, because the mean of its divisors is an integer number (48906700).

Almost surely, 2^97813399 is an apocalyptic number.

97813399 is a deficient number, since it is larger than the sum of its proper divisors (1).

97813399 is an equidigital number, since it uses as much as digits as its factorization.

97813399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 367416, while the sum is 49.

The square root of 97813399 is about 9890.0656721783. The cubic root of 97813399 is about 460.7508201451.

The spelling of 97813399 in words is "ninety-seven million, eight hundred thirteen thousand, three hundred ninety-nine".