799999749 has 12 divisors (see below), whose sum is σ = 1183740012. Its totient is φ = 520324800.

The previous prime is 799999747. The next prime is 799999757. The reversal of 799999749 is 947999997.

It can be written as a sum of positive squares in 2 ways, for example, as 65318724 + 734681025 = 8082^2 + 27105^2 .

It is not a de Polignac number, because 799999749 - 2¹ = 799999747 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (799999747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1083642 + ... + 1084379.

It is an arithmetic number, because the mean of its divisors is an integer number (98645001).

Almost surely, 2^799999749 is an apocalyptic number.

It is an amenable number.

799999749 is a deficient number, since it is larger than the sum of its proper divisors (383740263).

799999749 is a wasteful number, since it uses less digits than its factorization.

799999749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2168068 (or 2168065 counting only the distinct ones).

The product of its digits is 104162436, while the sum is 72.

The square root of 799999749 is about 28284.2668103665. The cubic root of 799999749 is about 928.3176696360.

The spelling of 799999749 in words is "seven hundred ninety-nine million, nine hundred ninety-nine thousand, seven hundred forty-nine".