7940198 has 16 divisors (see below), whose sum is σ = 14204160. Its totient is φ = 3254856.

The previous prime is 7940197. The next prime is 7940209. The reversal of 7940198 is 8910497.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7940197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12008 + ... + 12651.

It is an arithmetic number, because the mean of its divisors is an integer number (887760).

Almost surely, 2^7940198 is an apocalyptic number.

7940198 is a deficient number, since it is larger than the sum of its proper divisors (6263962).

7940198 is a wasteful number, since it uses less digits than its factorization.

7940198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24691.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 7940198 is about 2817.8356942874. The cubic root of 7940198 is about 199.5004030536.

Subtracting 7940198 from its reverse (8910497), we obtain a cube (970299 = 99³).

The spelling of 7940198 in words is "seven million, nine hundred forty thousand, one hundred ninety-eight".