988623619 has 2 divisors, whose sum is σ = 988623620. Its totient is φ = 988623618.

The previous prime is 988623607. The next prime is 988623673. The reversal of 988623619 is 916326889.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 988623619 - 2⁹ = 988623107 is a prime.

It is a super-2 number, since 2×988623619² = 1954753320089314322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (988623679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494311809 + 494311810.

It is an arithmetic number, because the mean of its divisors is an integer number (494311810).

Almost surely, 2^988623619 is an apocalyptic number.

988623619 is a deficient number, since it is larger than the sum of its proper divisors (1).

988623619 is an equidigital number, since it uses as much as digits as its factorization.

988623619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 52.

The square root of 988623619 is about 31442.3857078308. The cubic root of 988623619 is about 996.1934011916.

The spelling of 988623619 in words is "nine hundred eighty-eight million, six hundred twenty-three thousand, six hundred nineteen".