39979406240340 has 192 divisors, whose sum is σ = 130076296594944. Its totient is φ = 8986336100352.

The previous prime is 39979406240309. The next prime is 39979406240341. The reversal of 39979406240340 is 4304260497993.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39979406240341) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3270924 + ... + 9521436.

It is an arithmetic number, because the mean of its divisors is an integer number (677480711432).

Almost surely, 2^{39979406240340} is an apocalyptic number.

39979406240340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39979406240340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65038148297472).

39979406240340 is an abundant number, since it is smaller than the sum of its proper divisors (90096890354604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39979406240340 is a wasteful number, since it uses less digits than its factorization.

39979406240340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6250786 (or 6250784 counting only the distinct ones).

The product of its (nonzero) digits is 35271936, while the sum is 60.

The spelling of 39979406240340 in words is "thirty-nine trillion, nine hundred seventy-nine billion, four hundred six million, two hundred forty thousand, three hundred forty".