320736949 has 8 divisors (see below), whose sum is σ = 345847320. Its totient is φ = 295689216.

The previous prime is 320736947. The next prime is 320736959. The reversal of 320736949 is 949637023.

It can be written as a sum of positive squares in 4 ways, for example, as 88021924 + 232715025 = 9382^2 + 15255^2 .

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 320736949 - 2¹ = 320736947 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320736947) 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, 4732 + ... + 25765.

It is an arithmetic number, because the mean of its divisors is an integer number (43230915).

Almost surely, 2^320736949 is an apocalyptic number.

It is an amenable number.

320736949 is a deficient number, since it is larger than the sum of its proper divisors (25110371).

320736949 is a wasteful number, since it uses less digits than its factorization.

320736949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31319.

The product of its (nonzero) digits is 244944, while the sum is 43.

The square root of 320736949 is about 17909.1303250605. The cubic root of 320736949 is about 684.5150448904.

The spelling of 320736949 in words is "three hundred twenty million, seven hundred thirty-six thousand, nine hundred forty-nine".