87304739 has 4 divisors (see below), whose sum is σ = 87325056. Its totient is φ = 87284424.

The previous prime is 87304697. The next prime is 87304747. The reversal of 87304739 is 93740378.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87304739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87304696 and 87304705.

It is not an unprimeable number, because it can be changed into a prime (87304759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 899 + ... + 13244.

It is an arithmetic number, because the mean of its divisors is an integer number (21831264).

Almost surely, 2^87304739 is an apocalyptic number.

87304739 is a deficient number, since it is larger than the sum of its proper divisors (20317).

87304739 is a wasteful number, since it uses less digits than its factorization.

87304739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20316.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 87304739 is about 9343.7004981966. The cubic root of 87304739 is about 443.6215205910.

The spelling of 87304739 in words is "eighty-seven million, three hundred four thousand, seven hundred thirty-nine".