7878983 has 4 divisors (see below), whose sum is σ = 9004560. Its totient is φ = 6753408.

The previous prime is 7878979. The next prime is 7878989. The reversal of 7878983 is 3898787.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3898787 = 829 ⋅4703.

It is a cyclic number.

It is not a de Polignac number, because 7878983 - 2² = 7878979 is a prime.

It is a super-3 number, since 3×7878983³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7878989) 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, 562778 + ... + 562791.

It is an arithmetic number, because the mean of its divisors is an integer number (2251140).

Almost surely, 2^7878983 is an apocalyptic number.

7878983 is a deficient number, since it is larger than the sum of its proper divisors (1125577).

7878983 is a wasteful number, since it uses less digits than its factorization.

7878983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125576.

The product of its digits is 677376, while the sum is 50.

The square root of 7878983 is about 2806.9526180540. The cubic root of 7878983 is about 198.9863967200.

The spelling of 7878983 in words is "seven million, eight hundred seventy-eight thousand, nine hundred eighty-three".