3898691 has 4 divisors (see below), whose sum is σ = 3928584. Its totient is φ = 3868800.

The previous prime is 3898651. The next prime is 3898717. The reversal of 3898691 is 1968983.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3898691 - 2¹⁸ = 3636547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3898651) 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, 14750 + ... + 15011.

It is an arithmetic number, because the mean of its divisors is an integer number (982146).

Almost surely, 2^3898691 is an apocalyptic number.

3898691 is a deficient number, since it is larger than the sum of its proper divisors (29893).

3898691 is a wasteful number, since it uses less digits than its factorization.

3898691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29892.

The product of its digits is 93312, while the sum is 44.

The square root of 3898691 is about 1974.5103190412. The cubic root of 3898691 is about 157.3884790451.

The spelling of 3898691 in words is "three million, eight hundred ninety-eight thousand, six hundred ninety-one".