4038390 has 32 divisors (see below), whose sum is σ = 10769760. Its totient is φ = 1076832.

The previous prime is 4038379. The next prime is 4038403. The reversal of 4038390 is 938304.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7209 + ... + 7748.

It is an arithmetic number, because the mean of its divisors is an integer number (336555).

Almost surely, 2^4038390 is an apocalyptic number.

4038390 is an abundant number, since it is smaller than the sum of its proper divisors (6731370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4038390 is a wasteful number, since it uses less digits than its factorization.

4038390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14973 (or 14967 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 4038390 is about 2009.5745818456. The cubic root of 4038390 is about 159.2463252054.

The spelling of 4038390 in words is "four million, thirty-eight thousand, three hundred ninety".