97378887 has 4 divisors (see below), whose sum is σ = 129838520. Its totient is φ = 64919256.

The previous prime is 97378871. The next prime is 97378889. The reversal of 97378887 is 78887379.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78887379 = 3 ⋅26295793.

It is not a de Polignac number, because 97378887 - 2⁴ = 97378871 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 (97378889) 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, 16229812 + ... + 16229817.

It is an arithmetic number, because the mean of its divisors is an integer number (32459630).

Almost surely, 2^97378887 is an apocalyptic number.

97378887 is a deficient number, since it is larger than the sum of its proper divisors (32459633).

97378887 is a wasteful number, since it uses less digits than its factorization.

97378887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32459632.

The product of its digits is 4741632, while the sum is 57.

The square root of 97378887 is about 9868.0741282177. The cubic root of 97378887 is about 460.0675499413.

The spelling of 97378887 in words is "ninety-seven million, three hundred seventy-eight thousand, eight hundred eighty-seven".