3951198 has 48 divisors (see below), whose sum is σ = 9050496. Its totient is φ = 1244160.

The previous prime is 3951197. The next prime is 3951209. The reversal of 3951198 is 8911593.

It is a happy number.

It is a super-2 number, since 2×3951198² = 31223931270408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3951197) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40686 + ... + 40782.

It is an arithmetic number, because the mean of its divisors is an integer number (188552).

Almost surely, 2^3951198 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3951198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4525248).

3951198 is an abundant number, since it is smaller than the sum of its proper divisors (5099298).

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

3951198 is a wasteful number, since it uses less digits than its factorization.

3951198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 206 counting only the distinct ones).

The product of its digits is 9720, while the sum is 36.

The square root of 3951198 is about 1987.7620581951. The cubic root of 3951198 is about 158.0918922806.

The spelling of 3951198 in words is "three million, nine hundred fifty-one thousand, one hundred ninety-eight".