8434749 has 4 divisors (see below), whose sum is σ = 11246336. Its totient is φ = 5623164.

The previous prime is 8434733. The next prime is 8434753. The reversal of 8434749 is 9474348.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 8434749 - 2⁴ = 8434733 is a prime.

It is a super-2 number, since 2×8434749² = 142289981386002, which contains 22 as substring.

It is a d-powerful number, because it can be written as 8 + 4⁶ + 3¹³ + 4⁷ + 7⁸ + 4¹⁰ + 9⁴ .

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8434799) 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, 1405789 + ... + 1405794.

It is an arithmetic number, because the mean of its divisors is an integer number (2811584).

Almost surely, 2^8434749 is an apocalyptic number.

It is an amenable number.

8434749 is a deficient number, since it is larger than the sum of its proper divisors (2811587).

8434749 is a wasteful number, since it uses less digits than its factorization.

8434749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2811586.

The product of its digits is 96768, while the sum is 39.

The square root of 8434749 is about 2904.2639342870. The cubic root of 8434749 is about 203.5591933200.

The spelling of 8434749 in words is "eight million, four hundred thirty-four thousand, seven hundred forty-nine".