87430839 has 8 divisors (see below), whose sum is σ = 116789760. Its totient is φ = 58179576.

The previous prime is 87430793. The next prime is 87430879. The reversal of 87430839 is 93803478.

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

It is not a de Polignac number, because 87430839 - 2¹⁷ = 87299767 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87430839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87430879) 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, 24999 + ... + 28280.

It is an arithmetic number, because the mean of its divisors is an integer number (14598720).

Almost surely, 2^87430839 is an apocalyptic number.

87430839 is a deficient number, since it is larger than the sum of its proper divisors (29358921).

87430839 is a wasteful number, since it uses less digits than its factorization.

87430839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53829.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 87430839 is about 9350.4459251952. The cubic root of 87430839 is about 443.8350017950.

It can be divided in two parts, 874 and 30839, that added together give a palindrome (31713).

The spelling of 87430839 in words is "eighty-seven million, four hundred thirty thousand, eight hundred thirty-nine".