4012127397 has 10 divisors (see below), whose sum is σ = 5993424998. Its totient is φ = 2674751544.

The previous prime is 4012127389. The next prime is 4012127453. The reversal of 4012127397 is 7937212104.

4012127397 is a `hidden beast` number, since 401 + 212 + 7 + 39 + 7 = 666.

4012127397 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 3495292641 + 516834756 = 59121^2 + 22734^2 .

It is not a de Polignac number, because 4012127397 - 2³ = 4012127389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4012127897) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 24766138 + ... + 24766299.

Almost surely, 2^4012127397 is an apocalyptic number.

It is an amenable number.

4012127397 is a deficient number, since it is larger than the sum of its proper divisors (1981297601).

4012127397 is an equidigital number, since it uses as much as digits as its factorization.

4012127397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49532449 (or 49532440 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 4012127397 is about 63341.3561348350. The cubic root of 4012127397 is about 1589.0036869715.

The spelling of 4012127397 in words is "four billion, twelve million, one hundred twenty-seven thousand, three hundred ninety-seven".