39998425903 has 8 divisors (see below), whose sum is σ = 40105336320. Its totient is φ = 39891570840.

The previous prime is 39998425891. The next prime is 39998425949. The reversal of 39998425903 is 30952489993.

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 39998425903 - 2²¹ = 39996328751 is a prime.

It is a super-3 number, since 3×39998425903³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39998425003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1717648 + ... + 1740778.

It is an arithmetic number, because the mean of its divisors is an integer number (5013167040).

Almost surely, 2^39998425903 is an apocalyptic number.

39998425903 is a deficient number, since it is larger than the sum of its proper divisors (106910417).

39998425903 is a wasteful number, since it uses less digits than its factorization.

39998425903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27677.

The product of its (nonzero) digits is 18895680, while the sum is 61.

The spelling of 39998425903 in words is "thirty-nine billion, nine hundred ninety-eight million, four hundred twenty-five thousand, nine hundred three".