4029345 has 20 divisors (see below), whose sum is σ = 7223700. Its totient is φ = 2148768.

The previous prime is 4029341. The next prime is 4029359. The reversal of 4029345 is 5439204.

It can be written as a sum of positive squares in 2 ways, for example, as 1520289 + 2509056 = 1233^2 + 1584^2 .

It is not a de Polignac number, because 4029345 - 2² = 4029341 is a prime.

It is a super-2 number, since 2×4029345² = 32471242258050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4029341) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4570 + ... + 5379.

It is an arithmetic number, because the mean of its divisors is an integer number (361185).

Almost surely, 2^4029345 is an apocalyptic number.

4029345 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4029345 is a deficient number, since it is larger than the sum of its proper divisors (3194355).

4029345 is an equidigital number, since it uses as much as digits as its factorization.

4029345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9966 (or 9957 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 4029345 is about 2007.3228439890. The cubic root of 4029345 is about 159.1273454701.

The spelling of 4029345 in words is "four million, twenty-nine thousand, three hundred forty-five".