845049931 has 8 divisors (see below), whose sum is σ = 931001328. Its totient is φ = 760620000.

The previous prime is 845049929. The next prime is 845049943. The reversal of 845049931 is 139940548.

It is a happy number.

845049931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 845049931 - 2¹ = 845049929 is a prime.

It is a super-2 number, since 2×845049931² = 1428218771766209522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (845049911) 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, 379200 + ... + 381421.

It is an arithmetic number, because the mean of its divisors is an integer number (116375166).

Almost surely, 2^845049931 is an apocalyptic number.

845049931 is a deficient number, since it is larger than the sum of its proper divisors (85951397).

845049931 is a wasteful number, since it uses less digits than its factorization.

845049931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760733.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 845049931 is about 29069.7425341196. The cubic root of 845049931 is about 945.4258155832.

The spelling of 845049931 in words is "eight hundred forty-five million, forty-nine thousand, nine hundred thirty-one".