624050989 has 2 divisors, whose sum is σ = 624050990. Its totient is φ = 624050988.

The previous prime is 624050981. The next prime is 624050993. The reversal of 624050989 is 989050426.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 598193764 + 25857225 = 24458^2 + 5085^2 .

It is a cyclic number.

It is not a de Polignac number, because 624050989 - 2³ = 624050981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (624050981) 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, 312025494 + 312025495.

It is an arithmetic number, because the mean of its divisors is an integer number (312025495).

Almost surely, 2^624050989 is an apocalyptic number.

It is an amenable number.

624050989 is a deficient number, since it is larger than the sum of its proper divisors (1).

624050989 is an equidigital number, since it uses as much as digits as its factorization.

624050989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 624050989 is about 24981.0125695497. The cubic root of 624050989 is about 854.5550111964. Note that the first 3 decimals are identical.

The spelling of 624050989 in words is "six hundred twenty-four million, fifty thousand, nine hundred eighty-nine".