3940872851 has 2 divisors, whose sum is σ = 3940872852. Its totient is φ = 3940872850.

The previous prime is 3940872841. The next prime is 3940872911. The reversal of 3940872851 is 1582780493.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3940872851 - 2⁶ = 3940872787 is a prime.

It is a super-3 number, since 3×3940872851³ (a number of 30 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3940872796 and 3940872805.

It is not a weakly prime, because it can be changed into another prime (3940872841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1970436425 + 1970436426.

It is an arithmetic number, because the mean of its divisors is an integer number (1970436426).

Almost surely, 2^3940872851 is an apocalyptic number.

3940872851 is a deficient number, since it is larger than the sum of its proper divisors (1).

3940872851 is an equidigital number, since it uses as much as digits as its factorization.

3940872851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 3940872851 is about 62776.3717572145. The cubic root of 3940872851 is about 1579.5406519994.

The spelling of 3940872851 in words is "three billion, nine hundred forty million, eight hundred seventy-two thousand, eight hundred fifty-one".