4158749 has 4 divisors (see below), whose sum is σ = 4752864. Its totient is φ = 3564636.

The previous prime is 4158731. The next prime is 4158779. The reversal of 4158749 is 9478514.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9478514 = 2 ⋅4739257.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4158749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4158779) 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, 297047 + ... + 297060.

It is an arithmetic number, because the mean of its divisors is an integer number (1188216).

Almost surely, 2^4158749 is an apocalyptic number.

It is an amenable number.

4158749 is a deficient number, since it is larger than the sum of its proper divisors (594115).

4158749 is an equidigital number, since it uses as much as digits as its factorization.

4158749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594114.

The product of its digits is 40320, while the sum is 38.

The square root of 4158749 is about 2039.3011057713. The cubic root of 4158749 is about 160.8129071634.

The spelling of 4158749 in words is "four million, one hundred fifty-eight thousand, seven hundred forty-nine".