3972207427 has 2 divisors, whose sum is σ = 3972207428. Its totient is φ = 3972207426.

The previous prime is 3972207361. The next prime is 3972207439. The reversal of 3972207427 is 7247022793.

It is a strong prime.

It is an emirp because it is prime and its reverse (7247022793) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3972207427 - 2⁷ = 3972207299 is a prime.

It is a super-2 number, since 2×3972207427² = 31556863686227920658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3972207457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1986103713 + 1986103714.

It is an arithmetic number, because the mean of its divisors is an integer number (1986103714).

Almost surely, 2^3972207427 is an apocalyptic number.

3972207427 is a deficient number, since it is larger than the sum of its proper divisors (1).

3972207427 is an equidigital number, since it uses as much as digits as its factorization.

3972207427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 296352, while the sum is 43.

The square root of 3972207427 is about 63025.4506290911. The cubic root of 3972207427 is about 1583.7160073703.

The spelling of 3972207427 in words is "three billion, nine hundred seventy-two million, two hundred seven thousand, four hundred twenty-seven".