3897949 has 8 divisors (see below), whose sum is σ = 4292640. Its totient is φ = 3510000.

The previous prime is 3897941. The next prime is 3897967. The reversal of 3897949 is 9497983.

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 3897949 - 2³ = 3897941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3897941) 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, 427 + ... + 2824.

It is an arithmetic number, because the mean of its divisors is an integer number (536580).

Almost surely, 2^3897949 is an apocalyptic number.

It is an amenable number.

3897949 is a deficient number, since it is larger than the sum of its proper divisors (394691).

3897949 is a wasteful number, since it uses less digits than its factorization.

3897949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3371.

The product of its digits is 489888, while the sum is 49.

The square root of 3897949 is about 1974.3224154124. The cubic root of 3897949 is about 157.3784936713.

It can be divided in two parts, 389 and 7949, that added together give a palindrome (8338).

The spelling of 3897949 in words is "three million, eight hundred ninety-seven thousand, nine hundred forty-nine".