4265989 has 24 divisors (see below), whose sum is σ = 5518968. Its totient is φ = 3265920.

The previous prime is 4265981. The next prime is 4265999. The reversal of 4265989 is 9895624.

It can be written as a sum of positive squares in 4 ways, for example, as 30625 + 4235364 = 175^2 + 2058^2 .

It is not a de Polignac number, because 4265989 - 2³ = 4265981 is a prime.

It is an Ulam number.

4265989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4265981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23479 + ... + 23659.

It is an arithmetic number, because the mean of its divisors is an integer number (229957).

Almost surely, 2^4265989 is an apocalyptic number.

4265989 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

4265989 is a deficient number, since it is larger than the sum of its proper divisors (1252979).

4265989 is a wasteful number, since it uses less digits than its factorization.

4265989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245 (or 238 counting only the distinct ones).

The product of its digits is 155520, while the sum is 43.

The square root of 4265989 is about 2065.4270744812. The cubic root of 4265989 is about 162.1834658741.

The spelling of 4265989 in words is "four million, two hundred sixty-five thousand, nine hundred eighty-nine".