3991741098 has 32 divisors (see below), whose sum is σ = 8020482624. Its totient is φ = 1324426752.

The previous prime is 3991741097. The next prime is 3991741109. The reversal of 3991741098 is 8901471993.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3991741098.

It is not an unprimeable number, because it can be changed into a prime (3991741093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2351386 + ... + 2353082.

It is an arithmetic number, because the mean of its divisors is an integer number (250640082).

Almost surely, 2^3991741098 is an apocalyptic number.

3991741098 is an abundant number, since it is smaller than the sum of its proper divisors (4028741526).

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

3991741098 is a wasteful number, since it uses less digits than its factorization.

3991741098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3286.

The product of its (nonzero) digits is 489888, while the sum is 51.

The square root of 3991741098 is about 63180.2271126022. The cubic root of 3991741098 is about 1586.3077833792.

The spelling of 3991741098 in words is "three billion, nine hundred ninety-one million, seven hundred forty-one thousand, ninety-eight".