4280649 has 4 divisors (see below), whose sum is σ = 5707536. Its totient is φ = 2853764.

The previous prime is 4280629. The next prime is 4280657. The reversal of 4280649 is 9460824.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4280649 - 2⁹ = 4280137 is a prime.

It is a super-2 number, since 2×4280649² = 36647911722402, which contains 22 as substring.

It is a D-number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4280629) 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, 713439 + ... + 713444.

It is an arithmetic number, because the mean of its divisors is an integer number (1426884).

Almost surely, 2^4280649 is an apocalyptic number.

It is an amenable number.

4280649 is a deficient number, since it is larger than the sum of its proper divisors (1426887).

4280649 is a wasteful number, since it uses less digits than its factorization.

4280649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426886.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 4280649 is about 2068.9729336074. The cubic root of 4280649 is about 162.3690337271.

The spelling of 4280649 in words is "four million, two hundred eighty thousand, six hundred forty-nine".