3999801003 has 32 divisors (see below), whose sum is σ = 5975285760. Its totient is φ = 2359126560.

The previous prime is 3999800989. The next prime is 3999801019. The reversal of 3999801003 is 3001089993.

It is a happy number.

It is not a de Polignac number, because 3999801003 - 2¹⁸ = 3999538859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3999801083) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 270426 + ... + 284832.

It is an arithmetic number, because the mean of its divisors is an integer number (186727680).

Almost surely, 2^3999801003 is an apocalyptic number.

3999801003 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

3999801003 is a deficient number, since it is larger than the sum of its proper divisors (1975484757).

3999801003 is a wasteful number, since it uses less digits than its factorization.

3999801003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14647.

The product of its (nonzero) digits is 52488, while the sum is 42.

The square root of 3999801003 is about 63243.9799743818. The cubic root of 3999801003 is about 1587.3747275277.

The spelling of 3999801003 in words is "three billion, nine hundred ninety-nine million, eight hundred one thousand, three".