867940505 has 8 divisors (see below), whose sum is σ = 1043381952. Its totient is φ = 693116848.

The previous prime is 867940499. The next prime is 867940517. The reversal of 867940505 is 505049768.

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 867940505 - 2⁶ = 867940441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151349 + ... + 156978.

It is an arithmetic number, because the mean of its divisors is an integer number (130422744).

Almost surely, 2^867940505 is an apocalyptic number.

It is an amenable number.

867940505 is a deficient number, since it is larger than the sum of its proper divisors (175441447).

867940505 is a wasteful number, since it uses less digits than its factorization.

867940505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308895.

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 867940505 is about 29460.8300120686. The cubic root of 867940505 is about 953.8863895960.

The spelling of 867940505 in words is "eight hundred sixty-seven million, nine hundred forty thousand, five hundred five".