42903889 has 8 divisors (see below), whose sum is σ = 49183808. Its totient is φ = 36661680.

The previous prime is 42903877. The next prime is 42903893. The reversal of 42903889 is 98830924.

It is a happy number.

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 42903889 - 2⁵ = 42903857 is a prime.

It is a super-4 number, since 4×42903889⁴ (a number of 32 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42903899) 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, 6942 + ... + 11575.

It is an arithmetic number, because the mean of its divisors is an integer number (6147976).

Almost surely, 2^42903889 is an apocalyptic number.

It is an amenable number.

42903889 is a deficient number, since it is larger than the sum of its proper divisors (6279919).

42903889 is a wasteful number, since it uses less digits than its factorization.

42903889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18855.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 42903889 is about 6550.1060296762. The cubic root of 42903889 is about 350.0785918748.

The spelling of 42903889 in words is "forty-two million, nine hundred three thousand, eight hundred eighty-nine".