920319049 has 4 divisors (see below), whose sum is σ = 991112836. Its totient is φ = 849525264.

The previous prime is 920318983. The next prime is 920319053. The reversal of 920319049 is 940913029.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 940913029 = 7 ⋅134416147.

It can be written as a sum of positive squares in 2 ways, for example, as 169833024 + 750486025 = 13032^2 + 27395^2 .

It is a cyclic number.

It is not a de Polignac number, because 920319049 - 2⁹ = 920318537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 920318999 and 920319017.

It is not an unprimeable number, because it can be changed into a prime (920319349) 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 3 ways as a sum of consecutive naturals, for example, 35396874 + ... + 35396899.

It is an arithmetic number, because the mean of its divisors is an integer number (247778209).

Almost surely, 2^920319049 is an apocalyptic number.

It is an amenable number.

920319049 is a deficient number, since it is larger than the sum of its proper divisors (70793787).

920319049 is a wasteful number, since it uses less digits than its factorization.

920319049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70793786.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 920319049 is about 30336.7606873245. The cubic root of 920319049 is about 972.7012420265.

The spelling of 920319049 in words is "nine hundred twenty million, three hundred nineteen thousand, forty-nine".