86974749 has 16 divisors (see below), whose sum is σ = 131284800. Its totient is φ = 56888208.

The previous prime is 86974739. The next prime is 86974751. The reversal of 86974749 is 94747968.

It is a happy number.

86974749 is a `hidden beast` number, since 86 + 97 + 474 + 9 = 666.

It is not a de Polignac number, because 86974749 - 2⁸ = 86974493 is a prime.

It is a super-2 number, since 2×86974749² = 15129213927226002, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 86974695 and 86974704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86974739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28959 + ... + 31820.

It is an arithmetic number, because the mean of its divisors is an integer number (8205300).

Almost surely, 2^86974749 is an apocalyptic number.

It is an amenable number.

86974749 is a deficient number, since it is larger than the sum of its proper divisors (44310051).

86974749 is a wasteful number, since it uses less digits than its factorization.

86974749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60841 (or 60835 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 86974749 is about 9326.0253591763. The cubic root of 86974749 is about 443.0618889088.

The spelling of 86974749 in words is "eighty-six million, nine hundred seventy-four thousand, seven hundred forty-nine".