399029002849 has 4 divisors (see below), whose sum is σ = 399110927040. Its totient is φ = 398947078660.

The previous prime is 399029002837. The next prime is 399029002903. The reversal of 399029002849 is 948200920993.

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, and also an emirpimes, since its reverse is a distinct semiprime: 948200920993 = 1307 ⋅725478899.

It is a cyclic number.

It is not a de Polignac number, because 399029002849 - 2¹³ = 399028994657 is a prime.

It is a super-2 number, since 2×399029002849² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 399029002849.

It is not an unprimeable number, because it can be changed into a prime (399029000849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40954789 + ... + 40964530.

It is an arithmetic number, because the mean of its divisors is an integer number (99777731760).

Almost surely, 2^399029002849 is an apocalyptic number.

It is an amenable number.

399029002849 is a deficient number, since it is larger than the sum of its proper divisors (81924191).

399029002849 is an equidigital number, since it uses as much as digits as its factorization.

399029002849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81924190.

The product of its (nonzero) digits is 2519424, while the sum is 55.

The spelling of 399029002849 in words is "three hundred ninety-nine billion, twenty-nine million, two thousand, eight hundred forty-nine".