3940236197436 has 72 divisors (see below), whose sum is σ = 11549342492800. Its totient is φ = 1023437970720.

The previous prime is 3940236197423. The next prime is 3940236197459. The reversal of 3940236197436 is 6347916320493.

It is a super-2 number, since 2×3940236197436² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 193822786 + ... + 193843113.

Almost surely, 2^{3940236197436} is an apocalyptic number.

It is an amenable number.

3940236197436 is an abundant number, since it is smaller than the sum of its proper divisors (7609106295364).

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

3940236197436 is a wasteful number, since it uses less digits than its factorization.

3940236197436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387665935 (or 387665922 counting only the distinct ones).

The product of its (nonzero) digits is 17635968, while the sum is 57.

The spelling of 3940236197436 in words is "three trillion, nine hundred forty billion, two hundred thirty-six million, one hundred ninety-seven thousand, four hundred thirty-six".