94221421 has 4 divisors (see below), whose sum is σ = 107681632. Its totient is φ = 80761212.

The previous prime is 94221419. The next prime is 94221461. The reversal of 94221421 is 12412249.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12412249 = 23 ⋅539663.

It is not a de Polignac number, because 94221421 - 2¹ = 94221419 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 (94221461) 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, 6730095 + ... + 6730108.

It is an arithmetic number, because the mean of its divisors is an integer number (26920408).

Almost surely, 2^94221421 is an apocalyptic number.

It is an amenable number.

94221421 is a deficient number, since it is larger than the sum of its proper divisors (13460211).

94221421 is a wasteful number, since it uses less digits than its factorization.

94221421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13460210.

The product of its digits is 1152, while the sum is 25.

The square root of 94221421 is about 9706.7719144935. The cubic root of 94221421 is about 455.0403232790.

The spelling of 94221421 in words is "ninety-four million, two hundred twenty-one thousand, four hundred twenty-one".