93421091 has 2 divisors, whose sum is σ = 93421092. Its totient is φ = 93421090.

The previous prime is 93421087. The next prime is 93421099. The reversal of 93421091 is 19012439.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (19012439) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 93421091 - 2² = 93421087 is a prime.

It is not a weakly prime, because it can be changed into another prime (93421099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46710545 + 46710546.

It is an arithmetic number, because the mean of its divisors is an integer number (46710546).

Almost surely, 2^93421091 is an apocalyptic number.

93421091 is a deficient number, since it is larger than the sum of its proper divisors (1).

93421091 is an equidigital number, since it uses as much as digits as its factorization.

93421091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 93421091 is about 9665.4586544044. The cubic root of 93421091 is about 453.7482658728.

The spelling of 93421091 in words is "ninety-three million, four hundred twenty-one thousand, ninety-one".