97887943 has 4 divisors (see below), whose sum is σ = 103039960. Its totient is φ = 92735928.

The previous prime is 97887899. The next prime is 97887983. The reversal of 97887943 is 34978879.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97887943 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 (97887983) 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, 2575980 + ... + 2576017.

It is an arithmetic number, because the mean of its divisors is an integer number (25759990).

Almost surely, 2^97887943 is an apocalyptic number.

97887943 is a deficient number, since it is larger than the sum of its proper divisors (5152017).

97887943 is a wasteful number, since it uses less digits than its factorization.

97887943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5152016.

The product of its digits is 3048192, while the sum is 55.

The square root of 97887943 is about 9893.8335846122. The cubic root of 97887943 is about 460.8678371320.

The spelling of 97887943 in words is "ninety-seven million, eight hundred eighty-seven thousand, nine hundred forty-three".