3948691 has 4 divisors (see below), whose sum is σ = 3955392. Its totient is φ = 3941992.

The previous prime is 3948689. The next prime is 3948697. The reversal of 3948691 is 1968493.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1968493 = 1093 ⋅1801.

It is a cyclic number.

It is not a de Polignac number, because 3948691 - 2¹ = 3948689 is a prime.

It is a super-2 number, since 2×3948691² = 31184321226962, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (3948697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2371 + ... + 3676.

It is an arithmetic number, because the mean of its divisors is an integer number (988848).

Almost surely, 2^3948691 is an apocalyptic number.

3948691 is a deficient number, since it is larger than the sum of its proper divisors (6701).

3948691 is an equidigital number, since it uses as much as digits as its factorization.

3948691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6700.

The product of its digits is 46656, while the sum is 40.

The square root of 3948691 is about 1987.1313494583. The cubic root of 3948691 is about 158.0584492398.

The spelling of 3948691 in words is "three million, nine hundred forty-eight thousand, six hundred ninety-one".