4020497 has 4 divisors (see below), whose sum is σ = 4329780. Its totient is φ = 3711216.

The previous prime is 4020493. The next prime is 4020503. The reversal of 4020497 is 7940204.

4020497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 891136 + 3129361 = 944^2 + 1769^2 .

It is a cyclic number.

It is not a de Polignac number, because 4020497 - 2² = 4020493 is a prime.

It is a super-2 number, since 2×4020497² = 32328792254018, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4020493) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 154622 + ... + 154647.

It is an arithmetic number, because the mean of its divisors is an integer number (1082445).

Almost surely, 2^4020497 is an apocalyptic number.

It is an amenable number.

4020497 is a deficient number, since it is larger than the sum of its proper divisors (309283).

4020497 is a wasteful number, since it uses less digits than its factorization.

4020497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309282.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 4020497 is about 2005.1177022808. The cubic root of 4020497 is about 159.0107847068.

The spelling of 4020497 in words is "four million, twenty thousand, four hundred ninety-seven".