3939430697 has 2 divisors, whose sum is σ = 3939430698. Its totient is φ = 3939430696.

The previous prime is 3939430687. The next prime is 3939430709. The reversal of 3939430697 is 7960349393.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3936809536 + 2621161 = 62744^2 + 1619^2 .

It is a cyclic number.

It is not a de Polignac number, because 3939430697 - 2⁶ = 3939430633 is a prime.

It is a super-2 number, since 2×3939430697² = 31038228432931811618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3939430657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1969715348 + 1969715349.

It is an arithmetic number, because the mean of its divisors is an integer number (1969715349).

Almost surely, 2^3939430697 is an apocalyptic number.

It is an amenable number.

3939430697 is a deficient number, since it is larger than the sum of its proper divisors (1).

3939430697 is an equidigital number, since it uses as much as digits as its factorization.

3939430697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3306744, while the sum is 53.

The square root of 3939430697 is about 62764.8842666025. The cubic root of 3939430697 is about 1579.3479519825.

The spelling of 3939430697 in words is "three billion, nine hundred thirty-nine million, four hundred thirty thousand, six hundred ninety-seven".