3988457 has 8 divisors (see below), whose sum is σ = 4501440. Its totient is φ = 3500560.

The previous prime is 3988451. The next prime is 3988471. The reversal of 3988457 is 7548893.

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 3988457 - 2⁴ = 3988441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3988451) 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, 5933 + ... + 6570.

It is an arithmetic number, because the mean of its divisors is an integer number (562680).

Almost surely, 2^3988457 is an apocalyptic number.

It is an amenable number.

3988457 is a deficient number, since it is larger than the sum of its proper divisors (512983).

3988457 is a wasteful number, since it uses less digits than its factorization.

3988457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12543.

The product of its digits is 241920, while the sum is 44.

The square root of 3988457 is about 1997.1121651024. The cubic root of 3988457 is about 158.5872633284.

The spelling of 3988457 in words is "three million, nine hundred eighty-eight thousand, four hundred fifty-seven".