791921949 has 16 divisors (see below), whose sum is σ = 1299564672. Its totient is φ = 417716928.

The previous prime is 791921917. The next prime is 791921969. The reversal of 791921949 is 949129197.

It is not a de Polignac number, because 791921949 - 2⁵ = 791921917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (791921909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1450134 + ... + 1450679.

It is an arithmetic number, because the mean of its divisors is an integer number (81222792).

Almost surely, 2^791921949 is an apocalyptic number.

It is an amenable number.

791921949 is a deficient number, since it is larger than the sum of its proper divisors (507642723).

791921949 is a wasteful number, since it uses less digits than its factorization.

791921949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2900836.

The product of its digits is 367416, while the sum is 51.

The square root of 791921949 is about 28141.1078140147. The cubic root of 791921949 is about 925.1826078246.

The spelling of 791921949 in words is "seven hundred ninety-one million, nine hundred twenty-one thousand, nine hundred forty-nine".