3903438 has 96 divisors (see below), whose sum is σ = 10637568. Its totient is φ = 940800.

The previous prime is 3903437. The next prime is 3903443. The reversal of 3903438 is 8343093.

It is a happy number.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3903433) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54943 + ... + 55013.

It is an arithmetic number, because the mean of its divisors is an integer number (110808).

Almost surely, 2^3903438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3903438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5318784).

3903438 is an abundant number, since it is smaller than the sum of its proper divisors (6734130).

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

3903438 is a wasteful number, since it uses less digits than its factorization.

3903438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 3903438 is about 1975.7120235500. The cubic root of 3903438 is about 157.4523312531.

It can be divided in two parts, 390 and 3438, that added together give a triangular number (3828 = T₈₇).

The spelling of 3903438 in words is "three million, nine hundred three thousand, four hundred thirty-eight".