94021021 has 4 divisors (see below), whose sum is σ = 94761472. Its totient is φ = 93280572.

The previous prime is 94020977. The next prime is 94021073. The reversal of 94021021 is 12012049.

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 not a de Polignac number, because 94021021 - 2¹³ = 94012829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 94021021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (94021121) 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, 370035 + ... + 370288.

It is an arithmetic number, because the mean of its divisors is an integer number (23690368).

Almost surely, 2^94021021 is an apocalyptic number.

It is an amenable number.

94021021 is a deficient number, since it is larger than the sum of its proper divisors (740451).

94021021 is a wasteful number, since it uses less digits than its factorization.

94021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740450.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 94021021 is about 9696.4437295330. The cubic root of 94021021 is about 454.7174851275.

The spelling of 94021021 in words is "ninety-four million, twenty-one thousand, twenty-one".