4038890 has 8 divisors (see below), whose sum is σ = 7270020. Its totient is φ = 1615552.

The previous prime is 4038857. The next prime is 4038893. The reversal of 4038890 is 988304.

It can be written as a sum of positive squares in 2 ways, for example, as 4036081 + 2809 = 2009^2 + 53^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×4038890⁴ (a number of 28 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (4038893) 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, 201935 + ... + 201954.

Almost surely, 2^4038890 is an apocalyptic number.

4038890 is a deficient number, since it is larger than the sum of its proper divisors (3231130).

4038890 is a wasteful number, since it uses less digits than its factorization.

4038890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403896.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 4038890 is about 2009.6989824349. The cubic root of 4038890 is about 159.2528971211.

The spelling of 4038890 in words is "four million, thirty-eight thousand, eight hundred ninety".