39899299893 has 4 divisors (see below), whose sum is σ = 53199066528. Its totient is φ = 26599533260.

The previous prime is 39899299889. The next prime is 39899299927.

39899299893 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 39899299893 - 2² = 39899299889 is a prime.

It is a super-2 number, since 2×39899299893² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39899299813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6649883313 + ... + 6649883318.

It is an arithmetic number, because the mean of its divisors is an integer number (13299766632).

Almost surely, 2^39899299893 is an apocalyptic number.

It is an amenable number.

39899299893 is a deficient number, since it is larger than the sum of its proper divisors (13299766635).

39899299893 is a wasteful number, since it uses less digits than its factorization.

39899299893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13299766634.

The product of its digits is 612220032, while the sum is 78.

The spelling of 39899299893 in words is "thirty-nine billion, eight hundred ninety-nine million, two hundred ninety-nine thousand, eight hundred ninety-three".