724900349 has 4 divisors (see below), whose sum is σ = 767541564. Its totient is φ = 682259136.

The previous prime is 724900313. The next prime is 724900367. The reversal of 724900349 is 943009427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 943009427 = 101 ⋅9336727.

It can be written as a sum of positive squares in 2 ways, for example, as 324180025 + 400720324 = 18005^2 + 20018^2 .

It is a cyclic number.

It is not a de Polignac number, because 724900349 - 2¹⁶ = 724834813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724900399) 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, 21320582 + ... + 21320615.

It is an arithmetic number, because the mean of its divisors is an integer number (191885391).

Almost surely, 2^724900349 is an apocalyptic number.

It is an amenable number.

724900349 is a deficient number, since it is larger than the sum of its proper divisors (42641215).

724900349 is a wasteful number, since it uses less digits than its factorization.

724900349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42641214.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 724900349 is about 26923.9734994670. The cubic root of 724900349 is about 898.3097283456.

The spelling of 724900349 in words is "seven hundred twenty-four million, nine hundred thousand, three hundred forty-nine".