724939 has 2 divisors, whose sum is σ = 724940. Its totient is φ = 724938.

The previous prime is 724903. The next prime is 724949. The reversal of 724939 is 939427.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 724939 - 2¹³ = 716747 is a prime.

It is not a weakly prime, because it can be changed into another prime (724949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362469 + 362470.

It is an arithmetic number, because the mean of its divisors is an integer number (362470).

2⁷²⁴⁹³⁹ is an apocalyptic number.

724939 is a deficient number, since it is larger than the sum of its proper divisors (1).

724939 is an equidigital number, since it uses as much as digits as its factorization.

724939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 34.

The square root of 724939 is about 851.4334971094. The cubic root of 724939 is about 89.8325693736.

The spelling of 724939 in words is "seven hundred twenty-four thousand, nine hundred thirty-nine".