4089657 has 16 divisors (see below), whose sum is σ = 6406848. Its totient is φ = 2287680.

The previous prime is 4089643. The next prime is 4089677. The reversal of 4089657 is 7569804.

It is not a de Polignac number, because 4089657 - 2¹⁰ = 4088633 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

4089657 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4089677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4338 + ... + 5195.

It is an arithmetic number, because the mean of its divisors is an integer number (400428).

Almost surely, 2^4089657 is an apocalyptic number.

It is an amenable number.

4089657 is a deficient number, since it is larger than the sum of its proper divisors (2317191).

4089657 is a wasteful number, since it uses less digits than its factorization.

4089657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9560.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 4089657 is about 2022.2900385454. The cubic root of 4089657 is about 159.9173661843.

The spelling of 4089657 in words is "four million, eighty-nine thousand, six hundred fifty-seven".