87389307 has 8 divisors (see below), whose sum is σ = 129465680. Its totient is φ = 58259520.

The previous prime is 87389297. The next prime is 87389311. The reversal of 87389307 is 70398378.

It is not a de Polignac number, because 87389307 - 2⁷ = 87389179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87389317) 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, 1618294 + ... + 1618347.

It is an arithmetic number, because the mean of its divisors is an integer number (16183210).

Almost surely, 2^87389307 is an apocalyptic number.

87389307 is a deficient number, since it is larger than the sum of its proper divisors (42076373).

87389307 is a wasteful number, since it uses less digits than its factorization.

87389307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3236650 (or 3236644 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 87389307 is about 9348.2248047423. The cubic root of 87389307 is about 443.7647128098.

The spelling of 87389307 in words is "eighty-seven million, three hundred eighty-nine thousand, three hundred seven".