97399493 has 4 divisors (see below), whose sum is σ = 98996268. Its totient is φ = 95802720.

The previous prime is 97399481. The next prime is 97399507. The reversal of 97399493 is 39499379.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39499379 = 59 ⋅669481.

It can be written as a sum of positive squares in 2 ways, for example, as 19377604 + 78021889 = 4402^2 + 8833^2 .

It is a cyclic number.

It is not a de Polignac number, because 97399493 - 2¹⁴ = 97383109 is a prime.

It is a super-2 number, since 2×97399493² = 18973322473314098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97399193) 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, 798296 + ... + 798417.

It is an arithmetic number, because the mean of its divisors is an integer number (24749067).

Almost surely, 2^97399493 is an apocalyptic number.

It is an amenable number.

97399493 is a deficient number, since it is larger than the sum of its proper divisors (1596775).

97399493 is a wasteful number, since it uses less digits than its factorization.

97399493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596774.

The product of its digits is 1653372, while the sum is 53.

The square root of 97399493 is about 9869.1181470281. The cubic root of 97399493 is about 460.0999987387.

The spelling of 97399493 in words is "ninety-seven million, three hundred ninety-nine thousand, four hundred ninety-three".