39807194973 has 16 divisors (see below), whose sum is σ = 65324628096. Its totient is φ = 20997201600.

The previous prime is 39807194971. The next prime is 39807194983. The reversal of 39807194973 is 37949170893.

It is a happy number.

39807194973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 39807194973 - 2¹ = 39807194971 is a prime.

It is a super-2 number, since 2×39807194973² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39807194971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72906678 + ... + 72907223.

It is an arithmetic number, because the mean of its divisors is an integer number (4082789256).

Almost surely, 2^39807194973 is an apocalyptic number.

It is an amenable number.

39807194973 is a deficient number, since it is larger than the sum of its proper divisors (25517433123).

39807194973 is a wasteful number, since it uses less digits than its factorization.

39807194973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145813924.

The product of its (nonzero) digits is 10287648, while the sum is 60.

The spelling of 39807194973 in words is "thirty-nine billion, eight hundred seven million, one hundred ninety-four thousand, nine hundred seventy-three".