97887389 has 4 divisors (see below), whose sum is σ = 98837856. Its totient is φ = 96936924.

The previous prime is 97887359. The next prime is 97887407. The reversal of 97887389 is 98378879.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97887389 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 (97887319) 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, 475079 + ... + 475284.

It is an arithmetic number, because the mean of its divisors is an integer number (24709464).

Almost surely, 2^97887389 is an apocalyptic number.

It is an amenable number.

97887389 is a deficient number, since it is larger than the sum of its proper divisors (950467).

97887389 is a wasteful number, since it uses less digits than its factorization.

97887389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950466.

The product of its digits is 6096384, while the sum is 59.

The square root of 97887389 is about 9893.8055873359. The cubic root of 97887389 is about 460.8669676982.

The spelling of 97887389 in words is "ninety-seven million, eight hundred eighty-seven thousand, three hundred eighty-nine".