4742856891 has 6 divisors (see below), whose sum is σ = 6850793300. Its totient is φ = 3161904588.

The previous prime is 4742856889. The next prime is 4742856913. The reversal of 4742856891 is 1986582474.

It is a happy number.

4742856891 is a `hidden beast` number, since 4 + 74 + 2 + 8 + 568 + 9 + 1 = 666.

It is not a de Polignac number, because 4742856891 - 2¹ = 4742856889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4742856821) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 263492041 + ... + 263492058.

Almost surely, 2^4742856891 is an apocalyptic number.

4742856891 is a deficient number, since it is larger than the sum of its proper divisors (2107936409).

4742856891 is a wasteful number, since it uses less digits than its factorization.

4742856891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526984105 (or 526984102 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The square root of 4742856891 is about 68868.4027039977. The cubic root of 4742856891 is about 1680.1446505977.

The spelling of 4742856891 in words is "four billion, seven hundred forty-two million, eight hundred fifty-six thousand, eight hundred ninety-one".