619396889 has 2 divisors, whose sum is σ = 619396890. Its totient is φ = 619396888.

The previous prime is 619396873. The next prime is 619396913. The reversal of 619396889 is 988693916.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 368332864 + 251064025 = 19192^2 + 15845^2 .

It is a cyclic number.

It is not a de Polignac number, because 619396889 - 2⁴ = 619396873 is a prime.

It is a super-2 number, since 2×619396889² = 767305012205756642, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (619396859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309698444 + 309698445.

It is an arithmetic number, because the mean of its divisors is an integer number (309698445).

Almost surely, 2^619396889 is an apocalyptic number.

It is an amenable number.

619396889 is a deficient number, since it is larger than the sum of its proper divisors (1).

619396889 is an equidigital number, since it uses as much as digits as its factorization.

619396889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5038848, while the sum is 59.

The square root of 619396889 is about 24887.6854890124. The cubic root of 619396889 is about 852.4253172853.

The spelling of 619396889 in words is "six hundred nineteen million, three hundred ninety-six thousand, eight hundred eighty-nine".