4207969 has 2 divisors, whose sum is σ = 4207970. Its totient is φ = 4207968.

The previous prime is 4207961. The next prime is 4207981. The reversal of 4207969 is 9697024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2739025 + 1468944 = 1655^2 + 1212^2 .

It is a cyclic number.

It is not a de Polignac number, because 4207969 - 2³ = 4207961 is a prime.

It is a super-2 number, since 2×4207969² = 35414006209922, which contains 22 as substring.

It is an Ulam number.

4207969 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (4207961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2103984 + 2103985.

It is an arithmetic number, because the mean of its divisors is an integer number (2103985).

Almost surely, 2^4207969 is an apocalyptic number.

It is an amenable number.

4207969 is a deficient number, since it is larger than the sum of its proper divisors (1).

4207969 is an equidigital number, since it uses as much as digits as its factorization.

4207969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 4207969 is about 2051.3334687466. Note that the first 3 decimals coincide. The cubic root of 4207969 is about 161.4448430916. Note that the first 3 decimals are identical.

The spelling of 4207969 in words is "four million, two hundred seven thousand, nine hundred sixty-nine".