93477421 has 2 divisors, whose sum is σ = 93477422. Its totient is φ = 93477420.

The previous prime is 93477413. The next prime is 93477457. The reversal of 93477421 is 12477439.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73719396 + 19758025 = 8586^2 + 4445^2 .

It is a cyclic number.

It is not a de Polignac number, because 93477421 - 2³ = 93477413 is a prime.

It is a super-2 number, since 2×93477421² = 17476056473622482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (93477521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46738710 + 46738711.

It is an arithmetic number, because the mean of its divisors is an integer number (46738711).

Almost surely, 2^93477421 is an apocalyptic number.

It is an amenable number.

93477421 is a deficient number, since it is larger than the sum of its proper divisors (1).

93477421 is an equidigital number, since it uses as much as digits as its factorization.

93477421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 37.

The square root of 93477421 is about 9668.3722001172. The cubic root of 93477421 is about 453.8394462263.

The spelling of 93477421 in words is "ninety-three million, four hundred seventy-seven thousand, four hundred twenty-one".