8724739 has 2 divisors, whose sum is σ = 8724740. Its totient is φ = 8724738.

The previous prime is 8724721. The next prime is 8724787. The reversal of 8724739 is 9374278.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8724739 - 2¹⁵ = 8691971 is a prime.

It is a super-2 number, since 2×8724739² = 152242141236242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8724719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4362369 + 4362370.

It is an arithmetic number, because the mean of its divisors is an integer number (4362370).

Almost surely, 2^8724739 is an apocalyptic number.

8724739 is a deficient number, since it is larger than the sum of its proper divisors (1).

8724739 is an equidigital number, since it uses as much as digits as its factorization.

8724739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 40.

The square root of 8724739 is about 2953.7669170061. The cubic root of 8724739 is about 205.8657733059.

The spelling of 8724739 in words is "eight million, seven hundred twenty-four thousand, seven hundred thirty-nine".