87669429 has 8 divisors (see below), whose sum is σ = 119379840. Its totient is φ = 57202656.

The previous prime is 87669403. The next prime is 87669481. The reversal of 87669429 is 92496678.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87669429 - 2⁷ = 87669301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87669499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 310744 + ... + 311025.

It is an arithmetic number, because the mean of its divisors is an integer number (14922480).

Almost surely, 2^87669429 is an apocalyptic number.

It is an amenable number.

87669429 is a deficient number, since it is larger than the sum of its proper divisors (31710411).

87669429 is a wasteful number, since it uses less digits than its factorization.

87669429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621819.

The product of its digits is 1306368, while the sum is 51.

The square root of 87669429 is about 9363.1954481363. The cubic root of 87669429 is about 444.2383621913.

The spelling of 87669429 in words is "eighty-seven million, six hundred sixty-nine thousand, four hundred twenty-nine".