87429331 has 8 divisors (see below), whose sum is σ = 98454528. Its totient is φ = 76917000.

The previous prime is 87429319. The next prime is 87429341. The reversal of 87429331 is 13392478.

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

It is a cyclic number.

It is not a de Polignac number, because 87429331 - 2¹⁵ = 87396563 is a prime.

It is a super-2 number, since 2×87429331² = 15287775838215122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87429311) 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, 127855 + ... + 128536.

It is an arithmetic number, because the mean of its divisors is an integer number (12306816).

Almost surely, 2^87429331 is an apocalyptic number.

87429331 is a deficient number, since it is larger than the sum of its proper divisors (11025197).

87429331 is a wasteful number, since it uses less digits than its factorization.

87429331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256433.

The product of its digits is 36288, while the sum is 37.

The square root of 87429331 is about 9350.3652869821. The cubic root of 87429331 is about 443.8324500370.

The spelling of 87429331 in words is "eighty-seven million, four hundred twenty-nine thousand, three hundred thirty-one".