4007345 has 4 divisors (see below), whose sum is σ = 4808820. Its totient is φ = 3205872.

The previous prime is 4007321. The next prime is 4007351. The reversal of 4007345 is 5437004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1852321 + 2155024 = 1361^2 + 1468^2 .

It is a cyclic number.

It is not a de Polignac number, because 4007345 - 2⁶ = 4007281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4007345.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400730 + ... + 400739.

It is an arithmetic number, because the mean of its divisors is an integer number (1202205).

Almost surely, 2^4007345 is an apocalyptic number.

It is an amenable number.

4007345 is a deficient number, since it is larger than the sum of its proper divisors (801475).

4007345 is an equidigital number, since it uses as much as digits as its factorization.

4007345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801474.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 4007345 is about 2001.8354078195. The cubic root of 4007345 is about 158.8372079588.

The spelling of 4007345 in words is "four million, seven thousand, three hundred forty-five".