403900013 has 8 divisors (see below), whose sum is σ = 441645696. Its totient is φ = 366325600.

The previous prime is 403899997. The next prime is 403900027. The reversal of 403900013 is 310009304.

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 403900013 - 2⁴ = 403899997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403900213) 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, 37856 + ... + 47337.

It is an arithmetic number, because the mean of its divisors is an integer number (55205712).

Almost surely, 2^403900013 is an apocalyptic number.

It is an amenable number.

403900013 is a deficient number, since it is larger than the sum of its proper divisors (37745683).

403900013 is a wasteful number, since it uses less digits than its factorization.

403900013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85635.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 403900013 is about 20097.2638187391. The cubic root of 403900013 is about 739.1931874995.

Adding to 403900013 its reverse (310009304), we get a palindrome (713909317).

The spelling of 403900013 in words is "four hundred three million, nine hundred thousand, thirteen".