623141969 has 2 divisors, whose sum is σ = 623141970. Its totient is φ = 623141968.

The previous prime is 623141941. The next prime is 623141983. The reversal of 623141969 is 969141326.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 595945744 + 27196225 = 24412^2 + 5215^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-623141969 is a prime.

It is a super-2 number, since 2×623141969² = 776611827058393922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (623146969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311570984 + 311570985.

It is an arithmetic number, because the mean of its divisors is an integer number (311570985).

Almost surely, 2^623141969 is an apocalyptic number.

It is an amenable number.

623141969 is a deficient number, since it is larger than the sum of its proper divisors (1).

623141969 is an equidigital number, since it uses as much as digits as its factorization.

623141969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 41.

The square root of 623141969 is about 24962.8117206376. The cubic root of 623141969 is about 854.1398821483.

The spelling of 623141969 in words is "six hundred twenty-three million, one hundred forty-one thousand, nine hundred sixty-nine".