887072749 has 4 divisors (see below), whose sum is σ = 887189020. Its totient is φ = 886956480.

The previous prime is 887072737. The next prime is 887072759. The reversal of 887072749 is 947270788.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 306600100 + 580472649 = 17510^2 + 24093^2 .

It is a cyclic number.

It is not a de Polignac number, because 887072749 - 2⁷ = 887072621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 887072696 and 887072705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (887072759) 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, 45822 + ... + 62239.

It is an arithmetic number, because the mean of its divisors is an integer number (221797255).

Almost surely, 2^887072749 is an apocalyptic number.

It is an amenable number.

887072749 is a deficient number, since it is larger than the sum of its proper divisors (116271).

887072749 is a wasteful number, since it uses less digits than its factorization.

887072749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116270.

The product of its (nonzero) digits is 1580544, while the sum is 52.

The square root of 887072749 is about 29783.7665348089. The cubic root of 887072749 is about 960.8444353130.

The spelling of 887072749 in words is "eight hundred eighty-seven million, seventy-two thousand, seven hundred forty-nine".