87439001 has 8 divisors (see below), whose sum is σ = 95137224. Its totient is φ = 79879680.

The previous prime is 87438997. The next prime is 87439021. The reversal of 87439001 is 10093478.

It can be written as a sum of positive squares in 4 ways, for example, as 203401 + 87235600 = 451^2 + 9340^2 .

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 87439001 - 2² = 87438997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87439021) 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, 33410 + ... + 35931.

It is an arithmetic number, because the mean of its divisors is an integer number (11892153).

Almost surely, 2^87439001 is an apocalyptic number.

It is an amenable number.

87439001 is a deficient number, since it is larger than the sum of its proper divisors (7698223).

87439001 is a wasteful number, since it uses less digits than its factorization.

87439001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69451.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 87439001 is about 9350.8823647825. The cubic root of 87439001 is about 443.8488125915.

The spelling of 87439001 in words is "eighty-seven million, four hundred thirty-nine thousand, one".