456021893 has 2 divisors, whose sum is σ = 456021894. Its totient is φ = 456021892.

The previous prime is 456021847. The next prime is 456021913. The reversal of 456021893 is 398120654.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 425308129 + 30713764 = 20623^2 + 5542^2 .

It is a cyclic number.

It is not a de Polignac number, because 456021893 - 2⁶ = 456021829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (456027893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228010946 + 228010947.

It is an arithmetic number, because the mean of its divisors is an integer number (228010947).

Almost surely, 2^456021893 is an apocalyptic number.

It is an amenable number.

456021893 is a deficient number, since it is larger than the sum of its proper divisors (1).

456021893 is an equidigital number, since it uses as much as digits as its factorization.

456021893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 456021893 is about 21354.6691147393. The cubic root of 456021893 is about 769.7125440751.

The spelling of 456021893 in words is "four hundred fifty-six million, twenty-one thousand, eight hundred ninety-three".