87429029 has 2 divisors, whose sum is σ = 87429030. Its totient is φ = 87429028.

The previous prime is 87428989. The next prime is 87429031. The reversal of 87429029 is 92092478.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77176225 + 10252804 = 8785^2 + 3202^2 .

It is a cyclic number.

It is not a de Polignac number, because 87429029 - 2¹² = 87424933 is a prime.

It is a super-2 number, since 2×87429029² = 15287670223765682, which contains 22 as substring.

Together with 87429031, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87429059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43714514 + 43714515.

It is an arithmetic number, because the mean of its divisors is an integer number (43714515).

Almost surely, 2^87429029 is an apocalyptic number.

It is an amenable number.

87429029 is a deficient number, since it is larger than the sum of its proper divisors (1).

87429029 is an equidigital number, since it uses as much as digits as its factorization.

87429029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 87429029 is about 9350.3491378665. The cubic root of 87429029 is about 443.8319390050.

It can be divided in two parts, 8742 and 9029, that added together give a palindrome (17771).

The spelling of 87429029 in words is "eighty-seven million, four hundred twenty-nine thousand, twenty-nine".