5128949 has 8 divisors (see below), whose sum is σ = 5886528. Its totient is φ = 4377600.

The previous prime is 5128943. The next prime is 5128967. The reversal of 5128949 is 9498215.

5128949 = T₅₇ + T₅₈ + ... + T₃₁₃.

5128949 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5128949 is a prime.

It is a super-2 number, since 2×5128949² = 52612235689202, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5128943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374 + ... + 3224.

It is an arithmetic number, because the mean of its divisors is an integer number (735816).

Almost surely, 2^5128949 is an apocalyptic number.

It is an amenable number.

5128949 is a deficient number, since it is larger than the sum of its proper divisors (757579).

5128949 is a wasteful number, since it uses less digits than its factorization.

5128949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3115.

The product of its digits is 25920, while the sum is 38.

The square root of 5128949 is about 2264.7183047788. The cubic root of 5128949 is about 172.4551336091.

The spelling of 5128949 in words is "five million, one hundred twenty-eight thousand, nine hundred forty-nine".