88129939 has 2 divisors, whose sum is σ = 88129940. Its totient is φ = 88129938.

The previous prime is 88129903. The next prime is 88129949. The reversal of 88129939 is 93992188.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 88129939 - 2⁹ = 88129427 is a prime.

It is a super-2 number, since 2×88129939² = 15533772296287442, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 88129892 and 88129901.

It is not a weakly prime, because it can be changed into another prime (88129949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44064969 + 44064970.

It is an arithmetic number, because the mean of its divisors is an integer number (44064970).

Almost surely, 2^88129939 is an apocalyptic number.

88129939 is a deficient number, since it is larger than the sum of its proper divisors (1).

88129939 is an equidigital number, since it uses as much as digits as its factorization.

88129939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 49.

The square root of 88129939 is about 9387.7547368900. The cubic root of 88129939 is about 445.0148360159.

The spelling of 88129939 in words is "eighty-eight million, one hundred twenty-nine thousand, nine hundred thirty-nine".