87700838429 has 2 divisors, whose sum is σ = 87700838430. Its totient is φ = 87700838428.

The previous prime is 87700838369. The next prime is 87700838471. The reversal of 87700838429 is 92483800778.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68220216100 + 19480622329 = 261190^2 + 139573^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87700838429 is a prime.

It is a super-2 number, since 2×87700838429² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87700837429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43850419214 + 43850419215.

It is an arithmetic number, because the mean of its divisors is an integer number (43850419215).

Almost surely, 2^87700838429 is an apocalyptic number.

It is an amenable number.

87700838429 is a deficient number, since it is larger than the sum of its proper divisors (1).

87700838429 is an equidigital number, since it uses as much as digits as its factorization.

87700838429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5419008, while the sum is 56.

The spelling of 87700838429 in words is "eighty-seven billion, seven hundred million, eight hundred thirty-eight thousand, four hundred twenty-nine".