45606989 has 2 divisors, whose sum is σ = 45606990. Its totient is φ = 45606988.

The previous prime is 45606949. The next prime is 45606991. The reversal of 45606989 is 98960654.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44689225 + 917764 = 6685^2 + 958^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45606989 is a prime.

It is a super-2 number, since 2×45606989² = 4159994891292242, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 45606991, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45606929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22803494 + 22803495.

It is an arithmetic number, because the mean of its divisors is an integer number (22803495).

Almost surely, 2^45606989 is an apocalyptic number.

It is an amenable number.

45606989 is a deficient number, since it is larger than the sum of its proper divisors (1).

45606989 is an equidigital number, since it uses as much as digits as its factorization.

45606989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 47.

The square root of 45606989 is about 6753.2946774149. The cubic root of 45606989 is about 357.2814488935.

The spelling of 45606989 in words is "forty-five million, six hundred six thousand, nine hundred eighty-nine".