7840395 has 36 divisors (see below), whose sum is σ = 14171040. Its totient is φ = 4164048.

The previous prime is 7840381. The next prime is 7840409. The reversal of 7840395 is 5930487.

It is an interprime number because it is at equal distance from previous prime (7840381) and next prime (7840409).

It is not a de Polignac number, because 7840395 - 2⁵ = 7840363 is a prime.

It is a super-2 number, since 2×7840395² = 122943587512050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 32686 + ... + 32924.

It is an arithmetic number, because the mean of its divisors is an integer number (393640).

Almost surely, 2^7840395 is an apocalyptic number.

7840395 is a deficient number, since it is larger than the sum of its proper divisors (6330645).

7840395 is an frugal number, since it uses more digits than its factorization.

7840395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 7840395 is about 2800.0705348259. The cubic root of 7840395 is about 198.6610139201.

The spelling of 7840395 in words is "seven million, eight hundred forty thousand, three hundred ninety-five".