8500739 has 4 divisors (see below), whose sum is σ = 9154656. Its totient is φ = 7846824.

The previous prime is 8500729. The next prime is 8500753. The reversal of 8500739 is 9370058.

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

It is a cyclic number.

It is not a de Polignac number, because 8500739 - 2⁸ = 8500483 is a prime.

It is a super-2 number, since 2×8500739² = 144525127092242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8500729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326939 + ... + 326964.

It is an arithmetic number, because the mean of its divisors is an integer number (2288664).

Almost surely, 2^8500739 is an apocalyptic number.

8500739 is a deficient number, since it is larger than the sum of its proper divisors (653917).

8500739 is a wasteful number, since it uses less digits than its factorization.

8500739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653916.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 8500739 is about 2915.6026821225. The cubic root of 8500739 is about 204.0886693227.

The spelling of 8500739 in words is "eight million, five hundred thousand, seven hundred thirty-nine".