855147929 has 4 divisors (see below), whose sum is σ = 856287360. Its totient is φ = 854008500.

The previous prime is 855147907. The next prime is 855147949. The reversal of 855147929 is 929741558.

855147929 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 855147929 - 2⁸ = 855147673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (855147949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 568589 + ... + 570090.

It is an arithmetic number, because the mean of its divisors is an integer number (214071840).

Almost surely, 2^855147929 is an apocalyptic number.

It is an amenable number.

855147929 is a deficient number, since it is larger than the sum of its proper divisors (1139431).

855147929 is a wasteful number, since it uses less digits than its factorization.

855147929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139430.

The product of its digits is 907200, while the sum is 50.

The square root of 855147929 is about 29242.9124575511. The cubic root of 855147929 is about 949.1767305285.

The spelling of 855147929 in words is "eight hundred fifty-five million, one hundred forty-seven thousand, nine hundred twenty-nine".