45447893 has 2 divisors, whose sum is σ = 45447894. Its totient is φ = 45447892.

The previous prime is 45447887. The next prime is 45447907. The reversal of 45447893 is 39874454.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45252529 + 195364 = 6727^2 + 442^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45447893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45447863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22723946 + 22723947.

It is an arithmetic number, because the mean of its divisors is an integer number (22723947).

Almost surely, 2^45447893 is an apocalyptic number.

It is an amenable number.

45447893 is a deficient number, since it is larger than the sum of its proper divisors (1).

45447893 is an equidigital number, since it uses as much as digits as its factorization.

45447893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 44.

The square root of 45447893 is about 6741.5052473465. The cubic root of 45447893 is about 356.8655164877.

The spelling of 45447893 in words is "forty-five million, four hundred forty-seven thousand, eight hundred ninety-three".