93919421 has 4 divisors (see below), whose sum is σ = 94659072. Its totient is φ = 93179772.

The previous prime is 93919409. The next prime is 93919447. The reversal of 93919421 is 12491939.

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 93919421 - 2¹⁴ = 93903037 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 (93919621) 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, 369635 + ... + 369888.

It is an arithmetic number, because the mean of its divisors is an integer number (23664768).

Almost surely, 2^93919421 is an apocalyptic number.

It is an amenable number.

93919421 is a deficient number, since it is larger than the sum of its proper divisors (739651).

93919421 is a wasteful number, since it uses less digits than its factorization.

93919421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739650.

The product of its digits is 17496, while the sum is 38.

The square root of 93919421 is about 9691.2032792631. The cubic root of 93919421 is about 454.5536354297.

The spelling of 93919421 in words is "ninety-three million, nine hundred nineteen thousand, four hundred twenty-one".