699247039 has 4 divisors (see below), whose sum is σ = 700744824. Its totient is φ = 697749256.

The previous prime is 699247027. The next prime is 699247049. The reversal of 699247039 is 930742996.

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 699247039 - 2²³ = 690858431 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 699246983 and 699247001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (699247049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 748192 + ... + 749125.

It is an arithmetic number, because the mean of its divisors is an integer number (175186206).

Almost surely, 2^699247039 is an apocalyptic number.

699247039 is a deficient number, since it is larger than the sum of its proper divisors (1497785).

699247039 is a wasteful number, since it uses less digits than its factorization.

699247039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1497784.

The product of its (nonzero) digits is 734832, while the sum is 49.

The square root of 699247039 is about 26443.2796566538. The cubic root of 699247039 is about 887.5855270086.

The spelling of 699247039 in words is "six hundred ninety-nine million, two hundred forty-seven thousand, thirty-nine".