39895101949 has 4 divisors (see below), whose sum is σ = 39910490236. Its totient is φ = 39879713664.

The previous prime is 39895101941. The next prime is 39895101991. The reversal of 39895101949 is 94910159893.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34182463225 + 5712638724 = 184885^2 + 75582^2 .

It is a cyclic number.

It is not a de Polignac number, because 39895101949 - 2³ = 39895101941 is a prime.

It is a super-2 number, since 2×39895101949² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39895101893 and 39895101902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39895101941) 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, 7690254 + ... + 7695439.

It is an arithmetic number, because the mean of its divisors is an integer number (9977622559).

Almost surely, 2^39895101949 is an apocalyptic number.

It is an amenable number.

39895101949 is a deficient number, since it is larger than the sum of its proper divisors (15388287).

39895101949 is a wasteful number, since it uses less digits than its factorization.

39895101949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15388286.

The product of its (nonzero) digits is 3149280, while the sum is 58.

The spelling of 39895101949 in words is "thirty-nine billion, eight hundred ninety-five million, one hundred one thousand, nine hundred forty-nine".