3891007 has 8 divisors (see below), whose sum is σ = 3986352. Its totient is φ = 3796800.

The previous prime is 3890981. The next prime is 3891037. The reversal of 3891007 is 7001983.

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

It is a cyclic number.

It is not a de Polignac number, because 3891007 - 2⁷ = 3890879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3891037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13707 + ... + 13987.

It is an arithmetic number, because the mean of its divisors is an integer number (498294).

Almost surely, 2^3891007 is an apocalyptic number.

3891007 is a deficient number, since it is larger than the sum of its proper divisors (95345).

3891007 is a wasteful number, since it uses less digits than its factorization.

3891007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 3891007 is about 1972.5635604462. The cubic root of 3891007 is about 157.2850111146.

The spelling of 3891007 in words is "three million, eight hundred ninety-one thousand, seven".