94021387 has 4 divisors (see below), whose sum is σ = 94934320. Its totient is φ = 93108456.

The previous prime is 94021381. The next prime is 94021399. The reversal of 94021387 is 78312049.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78312049 = 227 ⋅344987.

It is a cyclic number.

It is not a de Polignac number, because 94021387 - 2⁷ = 94021259 is a prime.

It is a Duffinian number.

It is a zygodrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (94021381) 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, 456312 + ... + 456517.

It is an arithmetic number, because the mean of its divisors is an integer number (23733580).

Almost surely, 2^94021387 is an apocalyptic number.

94021387 is a deficient number, since it is larger than the sum of its proper divisors (912933).

94021387 is a wasteful number, since it uses less digits than its factorization.

94021387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912932.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 94021387 is about 9696.4626024133. The cubic root of 94021387 is about 454.7180751600.

The spelling of 94021387 in words is "ninety-four million, twenty-one thousand, three hundred eighty-seven".