3887447429 has 2 divisors, whose sum is σ = 3887447430. Its totient is φ = 3887447428.

The previous prime is 3887447411. The next prime is 3887447449. The reversal of 3887447429 is 9247447883.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2362154404 + 1525293025 = 48602^2 + 39055^2 .

It is a cyclic number.

It is not a de Polignac number, because 3887447429 - 2²⁴ = 3870670213 is a prime.

It is a super-2 number, since 2×3887447429² = 30224495026477420082, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3887447449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1943723714 + 1943723715.

It is an arithmetic number, because the mean of its divisors is an integer number (1943723715).

Almost surely, 2^3887447429 is an apocalyptic number.

It is an amenable number.

3887447429 is a deficient number, since it is larger than the sum of its proper divisors (1).

3887447429 is an equidigital number, since it uses as much as digits as its factorization.

3887447429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10838016, while the sum is 56.

The square root of 3887447429 is about 62349.3979842628. The cubic root of 3887447429 is about 1572.3703399048.

The spelling of 3887447429 in words is "three billion, eight hundred eighty-seven million, four hundred forty-seven thousand, four hundred twenty-nine".