93940087 has 4 divisors (see below), whose sum is σ = 93959496. Its totient is φ = 93920680.

The previous prime is 93940081. The next prime is 93940109. The reversal of 93940087 is 78004939.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78004939 = 151 ⋅516589.

It is a cyclic number.

It is not a de Polignac number, because 93940087 - 2⁷ = 93939959 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 (93940081) 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, 4137 + ... + 14317.

It is an arithmetic number, because the mean of its divisors is an integer number (23489874).

Almost surely, 2^93940087 is an apocalyptic number.

93940087 is a deficient number, since it is larger than the sum of its proper divisors (19409).

93940087 is a wasteful number, since it uses less digits than its factorization.

93940087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19408.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 93940087 is about 9692.2694452847. The cubic root of 93940087 is about 454.5869729312.

The spelling of 93940087 in words is "ninety-three million, nine hundred forty thousand, eighty-seven".