4020907 has 4 divisors (see below), whose sum is σ = 4386456. Its totient is φ = 3655360.

The previous prime is 4020889. The next prime is 4020923. The reversal of 4020907 is 7090204.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4020907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4020977) 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, 182758 + ... + 182779.

It is an arithmetic number, because the mean of its divisors is an integer number (1096614).

Almost surely, 2^4020907 is an apocalyptic number.

4020907 is a deficient number, since it is larger than the sum of its proper divisors (365549).

4020907 is a wasteful number, since it uses less digits than its factorization.

4020907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365548.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 4020907 is about 2005.2199380617. The cubic root of 4020907 is about 159.0161896941.

Adding to 4020907 its reverse (7090204), we get a palindrome (11111111).

The spelling of 4020907 in words is "four million, twenty thousand, nine hundred seven".