4072788891 has 16 divisors (see below), whose sum is σ = 6132677920. Its totient is φ = 2670680160.

The previous prime is 4072788847. The next prime is 4072788911. The reversal of 4072788891 is 1988872704.

It is a happy number.

4072788891 is a `hidden beast` number, since 407 + 2 + 78 + 88 + 91 = 666.

It is not a de Polignac number, because 4072788891 - 2²² = 4068594587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4072768891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1234780 + ... + 1238073.

It is an arithmetic number, because the mean of its divisors is an integer number (383292370).

Almost surely, 2^4072788891 is an apocalyptic number.

4072788891 is a deficient number, since it is larger than the sum of its proper divisors (2059889029).

4072788891 is a wasteful number, since it uses less digits than its factorization.

4072788891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2472923 (or 2472917 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 54.

The square root of 4072788891 is about 63818.4055817755. The cubic root of 4072788891 is about 1596.9719932819.

The spelling of 4072788891 in words is "four billion, seventy-two million, seven hundred eighty-eight thousand, eight hundred ninety-one".