7906849 has 8 divisors (see below), whose sum is σ = 8111880. Its totient is φ = 7704576.

The previous prime is 7906841. The next prime is 7906859. The reversal of 7906849 is 9486097.

It can be written as a sum of positive squares in 4 ways, for example, as 245025 + 7661824 = 495^2 + 2768^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 7906849 - 2³ = 7906841 is a prime.

It is a super-2 number, since 2×7906849² = 125036522217602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7906841) 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, 5889 + ... + 7105.

It is an arithmetic number, because the mean of its divisors is an integer number (1013985).

Almost surely, 2^7906849 is an apocalyptic number.

It is an amenable number.

7906849 is a deficient number, since it is larger than the sum of its proper divisors (205031).

7906849 is a wasteful number, since it uses less digits than its factorization.

7906849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 7906849 is about 2811.9119829753. The cubic root of 7906849 is about 199.2207091393.

The spelling of 7906849 in words is "seven million, nine hundred six thousand, eight hundred forty-nine".