3991400199 has 32 divisors (see below), whose sum is σ = 6283823040. Its totient is φ = 2495287296.

The previous prime is 3991400117. The next prime is 3991400207. The reversal of 3991400199 is 9910041993.

It is not a de Polignac number, because 3991400199 - 2⁸ = 3991399943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3991400099) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 111447 + ... + 142839.

It is an arithmetic number, because the mean of its divisors is an integer number (196369470).

Almost surely, 2^3991400199 is an apocalyptic number.

3991400199 is a deficient number, since it is larger than the sum of its proper divisors (2292422841).

3991400199 is a wasteful number, since it uses less digits than its factorization.

3991400199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31696 (or 31690 counting only the distinct ones).

The product of its (nonzero) digits is 78732, while the sum is 45.

The square root of 3991400199 is about 63177.5292251921. The cubic root of 3991400199 is about 1586.2626246278.

The spelling of 3991400199 in words is "three billion, nine hundred ninety-one million, four hundred thousand, one hundred ninety-nine".