4390749 has 12 divisors (see below), whose sum is σ = 6918912. Its totient is φ = 2661000.

The previous prime is 4390739. The next prime is 4390751. The reversal of 4390749 is 9470934.

It is not a de Polignac number, because 4390749 - 2⁴ = 4390733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4390739) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22077 + ... + 22274.

It is an arithmetic number, because the mean of its divisors is an integer number (576576).

Almost surely, 2^4390749 is an apocalyptic number.

It is an amenable number.

4390749 is a deficient number, since it is larger than the sum of its proper divisors (2528163).

4390749 is a wasteful number, since it uses less digits than its factorization.

4390749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44368 (or 44365 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 4390749 is about 2095.4114154504. The cubic root of 4390749 is about 163.7493320098.

It can be divided in two parts, 43907 and 49, that added together give a triangular number (43956 = T₂₉₆).

The spelling of 4390749 in words is "four million, three hundred ninety thousand, seven hundred forty-nine".