3991460 has 24 divisors (see below), whose sum is σ = 9144576. Its totient is φ = 1451360.

The previous prime is 3991451. The next prime is 3991469. The reversal of 3991460 is 641993.

It is an interprime number because it is at equal distance from previous prime (3991451) and next prime (3991469).

It is not an unprimeable number, because it can be changed into a prime (3991469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8852 + ... + 9291.

It is an arithmetic number, because the mean of its divisors is an integer number (381024).

Almost surely, 2^3991460 is an apocalyptic number.

It is an amenable number.

3991460 is an abundant number, since it is smaller than the sum of its proper divisors (5153116).

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

3991460 is a wasteful number, since it uses less digits than its factorization.

3991460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18163 (or 18161 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 3991460 is about 1997.8638592256. The cubic root of 3991460 is about 158.6270546628.

The spelling of 3991460 in words is "three million, nine hundred ninety-one thousand, four hundred sixty".