320799949 has 8 divisors (see below), whose sum is σ = 328923000. Its totient is φ = 312691200.

The previous prime is 320799931. The next prime is 320799959. The reversal of 320799949 is 949997023.

It can be written as a sum of positive squares in 4 ways, for example, as 47955625 + 272844324 = 6925^2 + 16518^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320799949 - 2⁷ = 320799821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320799896 and 320799905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320799959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52927 + ... + 58675.

It is an arithmetic number, because the mean of its divisors is an integer number (41115375).

Almost surely, 2^320799949 is an apocalyptic number.

It is an amenable number.

320799949 is a deficient number, since it is larger than the sum of its proper divisors (8123051).

320799949 is a wasteful number, since it uses less digits than its factorization.

320799949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7151.

The product of its (nonzero) digits is 1102248, while the sum is 52.

The square root of 320799949 is about 17910.8891180756. The cubic root of 320799949 is about 684.5598600416.

The spelling of 320799949 in words is "three hundred twenty million, seven hundred ninety-nine thousand, nine hundred forty-nine".