3940406471 has 2 divisors, whose sum is σ = 3940406472. Its totient is φ = 3940406470.

The previous prime is 3940406441. The next prime is 3940406527. The reversal of 3940406471 is 1746040493.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3940406471 - 2¹⁴ = 3940390087 is a prime.

It is a super-3 number, since 3×3940406471³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3940406441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1970203235 + 1970203236.

It is an arithmetic number, because the mean of its divisors is an integer number (1970203236).

Almost surely, 2^3940406471 is an apocalyptic number.

3940406471 is a deficient number, since it is larger than the sum of its proper divisors (1).

3940406471 is an equidigital number, since it uses as much as digits as its factorization.

3940406471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 3940406471 is about 62772.6570331382. The cubic root of 3940406471 is about 1579.4783396422.

The spelling of 3940406471 in words is "three billion, nine hundred forty million, four hundred six thousand, four hundred seventy-one".