4309945 has 8 divisors (see below), whose sum is σ = 5311944. Its totient is φ = 3354624.

The previous prime is 4309939. The next prime is 4309957. The reversal of 4309945 is 5499034.

It can be written as a sum of positive squares in 4 ways, for example, as 425104 + 3884841 = 652^2 + 1971^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4309945 - 2³ = 4309937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4309945.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11464 + ... + 11833.

It is an arithmetic number, because the mean of its divisors is an integer number (663993).

Almost surely, 2^4309945 is an apocalyptic number.

It is an amenable number.

4309945 is a deficient number, since it is larger than the sum of its proper divisors (1001999).

4309945 is a wasteful number, since it uses less digits than its factorization.

4309945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23339.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 4309945 is about 2076.0407028765. The cubic root of 4309945 is about 162.7386001801.

It can be divided in two parts, 430 and 9945, that multiplied together give a triangular number (4276350 = T₂₉₂₄).

The spelling of 4309945 in words is "four million, three hundred nine thousand, nine hundred forty-five".