7978383 has 12 divisors (see below), whose sum is σ = 13170768. Its totient is φ = 4559040.

The previous prime is 7978381. The next prime is 7978403. The reversal of 7978383 is 3838797.

It is not a de Polignac number, because 7978383 - 2¹ = 7978381 is a prime.

7978383 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7978381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63258 + ... + 63383.

It is an arithmetic number, because the mean of its divisors is an integer number (1097564).

Almost surely, 2^7978383 is an apocalyptic number.

7978383 is a deficient number, since it is larger than the sum of its proper divisors (5192385).

7978383 is a wasteful number, since it uses less digits than its factorization.

7978383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126654 (or 126651 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 7978383 is about 2824.6031579675. The cubic root of 7978383 is about 199.8196958342.

It can be divided in two parts, 797 and 8383, that added together give a triangular number (9180 = T₁₃₅).

The spelling of 7978383 in words is "seven million, nine hundred seventy-eight thousand, three hundred eighty-three".