3991598460 has 96 divisors (see below), whose sum is σ = 12721262400. Its totient is φ = 1038458880.

The previous prime is 3991598459. The next prime is 3991598461. The reversal of 3991598460 is 648951993.

3991598460 is a `hidden beast` number, since 3 + 9 + 9 + 1 + 598 + 46 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (3991598459) and next prime (3991598461).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 3991598397 and 3991598406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3991598461) 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, 68005 + ... + 112284.

It is an arithmetic number, because the mean of its divisors is an integer number (132513150).

Almost surely, 2^3991598460 is an apocalyptic number.

3991598460 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3991598460 is an abundant number, since it is smaller than the sum of its proper divisors (8729663940).

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

3991598460 is a wasteful number, since it uses less digits than its factorization.

3991598460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180348 (or 180340 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 54.

The square root of 3991598460 is about 63179.0982841636. The cubic root of 3991598460 is about 1586.2888884944.

The spelling of 3991598460 in words is "three billion, nine hundred ninety-one million, five hundred ninety-eight thousand, four hundred sixty".