8749442 has 16 divisors (see below), whose sum is σ = 14183232. Its totient is φ = 4024080.

The previous prime is 8749439. The next prime is 8749451. The reversal of 8749442 is 2449478.

It is a super-2 number, since 2×8749442² = 153105470622728, which contains 22 as substring.

It is a d-powerful number, because it can be written as 8⁵ + 7² + 4⁴ + 9² + 4⁸ + 4⁹ + 2²³ .

It is a junction number, because it is equal to n+sod(n) for n = 8749396 and 8749405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12317 + ... + 13007.

It is an arithmetic number, because the mean of its divisors is an integer number (886452).

Almost surely, 2^8749442 is an apocalyptic number.

8749442 is a deficient number, since it is larger than the sum of its proper divisors (5433790).

8749442 is a wasteful number, since it uses less digits than its factorization.

8749442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1193.

The product of its digits is 64512, while the sum is 38.

The square root of 8749442 is about 2957.9455708312. The cubic root of 8749442 is about 206.0598845598.

The spelling of 8749442 in words is "eight million, seven hundred forty-nine thousand, four hundred forty-two".