39906221871412 has 48 divisors (see below), whose sum is σ = 78480840316032. Its totient is φ = 17616777171840.

The previous prime is 39906221871379. The next prime is 39906221871427. The reversal of 39906221871412 is 21417812260993.

It is a super-2 number, since 2×39906221871412² (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30743587 + ... + 32015317.

It is an arithmetic number, because the mean of its divisors is an integer number (1635017506584).

Almost surely, 2^{39906221871412} is an apocalyptic number.

It is an amenable number.

39906221871412 is a deficient number, since it is larger than the sum of its proper divisors (38574618444620).

39906221871412 is a wasteful number, since it uses less digits than its factorization.

39906221871412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298008 (or 1298006 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 55.

The spelling of 39906221871412 in words is "thirty-nine trillion, nine hundred six billion, two hundred twenty-one million, eight hundred seventy-one thousand, four hundred twelve".