3957198 has 16 divisors (see below), whose sum is σ = 9045120. Its totient is φ = 1130616.

The previous prime is 3957179. The next prime is 3957223. The reversal of 3957198 is 8917593.

It is a happy number.

It is a super-3 number, since 3×3957198³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 94219 = 3957198 / (3 + 9 + 5 + 7 + 1 + 9 + 8).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47068 + ... + 47151.

It is an arithmetic number, because the mean of its divisors is an integer number (565320).

Almost surely, 2^3957198 is an apocalyptic number.

3957198 is an abundant number, since it is smaller than the sum of its proper divisors (5087922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3957198 is a wasteful number, since it uses less digits than its factorization.

3957198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94231.

The product of its digits is 68040, while the sum is 42.

The square root of 3957198 is about 1989.2707206411. The cubic root of 3957198 is about 158.1718740671.

The spelling of 3957198 in words is "three million, nine hundred fifty-seven thousand, one hundred ninety-eight".