791650249 has 12 divisors (see below), whose sum is σ = 862217676. Its totient is φ = 726503232.

The previous prime is 791650247. The next prime is 791650289. The reversal of 791650249 is 942056197.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 915849 + 790734400 = 957^2 + 28120^2 .

It is not a de Polignac number, because 791650249 - 2¹ = 791650247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (791650247) 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, 15699 + ... + 42775.

It is an arithmetic number, because the mean of its divisors is an integer number (71851473).

Almost surely, 2^791650249 is an apocalyptic number.

It is an amenable number.

791650249 is a deficient number, since it is larger than the sum of its proper divisors (70567427).

791650249 is a wasteful number, since it uses less digits than its factorization.

791650249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27276 (or 27263 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 791650249 is about 28136.2799424515. The cubic root of 791650249 is about 925.0767889502.

The spelling of 791650249 in words is "seven hundred ninety-one million, six hundred fifty thousand, two hundred forty-nine".