45849989 has 2 divisors, whose sum is σ = 45849990. Its totient is φ = 45849988.

The previous prime is 45849967. The next prime is 45850019. The reversal of 45849989 is 98994854.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36699364 + 9150625 = 6058^2 + 3025^2 .

It is a cyclic number.

It is not a de Polignac number, because 45849989 - 2⁸ = 45849733 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45849889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22924994 + 22924995.

It is an arithmetic number, because the mean of its divisors is an integer number (22924995).

Almost surely, 2^45849989 is an apocalyptic number.

It is an amenable number.

45849989 is a deficient number, since it is larger than the sum of its proper divisors (1).

45849989 is an equidigital number, since it uses as much as digits as its factorization.

45849989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3732480, while the sum is 56.

The square root of 45849989 is about 6771.2619946359. The cubic root of 45849989 is about 357.9148726572.

The spelling of 45849989 in words is "forty-five million, eight hundred forty-nine thousand, nine hundred eighty-nine".