3801988 has 6 divisors (see below), whose sum is σ = 6653486. Its totient is φ = 1900992.

The previous prime is 3801983. The next prime is 3802003. The reversal of 3801988 is 8891083.

It can be written as a sum of positive squares in only one way, i.e., 3415104 + 386884 = 1848^2 + 622^2 .

It is a super-5 number, since 5×3801988⁵ (a number of 34 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (3801983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 475245 + ... + 475252.

Almost surely, 2^3801988 is an apocalyptic number.

It is an amenable number.

3801988 is a deficient number, since it is larger than the sum of its proper divisors (2851498).

3801988 is a wasteful number, since it uses less digits than its factorization.

3801988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950501 (or 950499 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 3801988 is about 1949.8687135292. The cubic root of 3801988 is about 156.0762830952.

The spelling of 3801988 in words is "three million, eight hundred one thousand, nine hundred eighty-eight".