8240739 has 16 divisors (see below), whose sum is σ = 12348672. Its totient is φ = 4850208.

The previous prime is 8240731. The next prime is 8240741. The reversal of 8240739 is 9370428.

It is not a de Polignac number, because 8240739 - 2³ = 8240731 is a prime.

It is a super-2 number, since 2×8240739² = 135819558532242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8240731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3697 + ... + 5490.

It is an arithmetic number, because the mean of its divisors is an integer number (771792).

Almost surely, 2^8240739 is an apocalyptic number.

8240739 is a deficient number, since it is larger than the sum of its proper divisors (4107933).

8240739 is a wasteful number, since it uses less digits than its factorization.

8240739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9226.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 8240739 is about 2870.6687374199. The cubic root of 8240739 is about 201.9863647954.

The spelling of 8240739 in words is "eight million, two hundred forty thousand, seven hundred thirty-nine".