3940220507 has 2 divisors, whose sum is σ = 3940220508. Its totient is φ = 3940220506.

The previous prime is 3940220491. The next prime is 3940220527. The reversal of 3940220507 is 7050220493.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3940220507 - 2⁴ = 3940220491 is a prime.

It is not a weakly prime, because it can be changed into another prime (3940220527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1970110253 + 1970110254.

It is an arithmetic number, because the mean of its divisors is an integer number (1970110254).

Almost surely, 2^3940220507 is an apocalyptic number.

3940220507 is a deficient number, since it is larger than the sum of its proper divisors (1).

3940220507 is an equidigital number, since it uses as much as digits as its factorization.

3940220507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 3940220507 is about 62771.1757656331. The cubic root of 3940220507 is about 1579.4534918899.

The spelling of 3940220507 in words is "three billion, nine hundred forty million, two hundred twenty thousand, five hundred seven".