94380021 has 12 divisors (see below), whose sum is σ = 138195148. Its totient is φ = 62057664.

The previous prime is 94379963. The next prime is 94380029. The reversal of 94380021 is 12008349.

It can be written as a sum of positive squares in 2 ways, for example, as 52272900 + 42107121 = 7230^2 + 6489^2 .

It is not a de Polignac number, because 94380021 - 2²² = 90185717 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 (94380029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71170 + ... + 72483.

Almost surely, 2^94380021 is an apocalyptic number.

It is an amenable number.

94380021 is a deficient number, since it is larger than the sum of its proper divisors (43815127).

94380021 is a wasteful number, since it uses less digits than its factorization.

94380021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143732 (or 143729 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 94380021 is about 9714.9380337705. The cubic root of 94380021 is about 455.2954985842.

The spelling of 94380021 in words is "ninety-four million, three hundred eighty thousand, twenty-one".