87164429 has 4 divisors (see below), whose sum is σ = 95088480. Its totient is φ = 79240380.

The previous prime is 87164369. The next prime is 87164449. The reversal of 87164429 is 92446178.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87164429 - 2²⁰ = 86115853 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87164449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3962009 + ... + 3962030.

It is an arithmetic number, because the mean of its divisors is an integer number (23772120).

Almost surely, 2^87164429 is an apocalyptic number.

It is an amenable number.

87164429 is a deficient number, since it is larger than the sum of its proper divisors (7924051).

87164429 is a wasteful number, since it uses less digits than its factorization.

87164429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7924050.

The product of its digits is 96768, while the sum is 41.

The square root of 87164429 is about 9336.1892118787. The cubic root of 87164429 is about 443.3837407901.

The spelling of 87164429 in words is "eighty-seven million, one hundred sixty-four thousand, four hundred twenty-nine".