881617947 has 24 divisors (see below), whose sum is σ = 1368525312. Its totient is φ = 503370000.

The previous prime is 881617931. The next prime is 881617969. The reversal of 881617947 is 749716188.

It is not a de Polignac number, because 881617947 - 2⁴ = 881617931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 881617947.

It is not an unprimeable number, because it can be changed into a prime (881617927) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 344322 + ... + 346872.

It is an arithmetic number, because the mean of its divisors is an integer number (57021888).

Almost surely, 2^881617947 is an apocalyptic number.

881617947 is a deficient number, since it is larger than the sum of its proper divisors (486907365).

881617947 is a wasteful number, since it uses less digits than its factorization.

881617947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4919 (or 4912 counting only the distinct ones).

The product of its digits is 677376, while the sum is 51.

The square root of 881617947 is about 29692.0519162957. The cubic root of 881617947 is about 958.8709045329.

It can be divided in two parts, 881 and 617947, that added together give a triangular number (618828 = T₁₁₁₂).

The spelling of 881617947 in words is "eight hundred eighty-one million, six hundred seventeen thousand, nine hundred forty-seven".