88139837 has 2 divisors, whose sum is σ = 88139838. Its totient is φ = 88139836.

The previous prime is 88139833. The next prime is 88139869. The reversal of 88139837 is 73893188.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77810041 + 10329796 = 8821^2 + 3214^2 .

It is a cyclic number.

It is not a de Polignac number, because 88139837 - 2² = 88139833 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 88139791 and 88139800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88139833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44069918 + 44069919.

It is an arithmetic number, because the mean of its divisors is an integer number (44069919).

Almost surely, 2^88139837 is an apocalyptic number.

It is an amenable number.

88139837 is a deficient number, since it is larger than the sum of its proper divisors (1).

88139837 is an equidigital number, since it uses as much as digits as its factorization.

88139837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 47.

The square root of 88139837 is about 9388.2818981963. The cubic root of 88139837 is about 445.0314954773.

The spelling of 88139837 in words is "eighty-eight million, one hundred thirty-nine thousand, eight hundred thirty-seven".