4016991 has 8 divisors (see below), whose sum is σ = 5842944. Its totient is φ = 2434520.

The previous prime is 4016983. The next prime is 4017001. The reversal of 4016991 is 1996104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4016991 - 2³ = 4016983 is a prime.

It is a super-2 number, since 2×4016991² = 32272433388162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4016791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60831 + ... + 60896.

It is an arithmetic number, because the mean of its divisors is an integer number (730368).

Almost surely, 2^4016991 is an apocalyptic number.

4016991 is a deficient number, since it is larger than the sum of its proper divisors (1825953).

4016991 is a wasteful number, since it uses less digits than its factorization.

4016991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121741.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 4016991 is about 2004.2432487101. The cubic root of 4016991 is about 158.9645504610.

The spelling of 4016991 in words is "four million, sixteen thousand, nine hundred ninety-one".