3877988401 has 4 divisors (see below), whose sum is σ = 4431986752. Its totient is φ = 3323990052.

The previous prime is 3877988381. The next prime is 3877988423. The reversal of 3877988401 is 1048897783.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1048897783 = 16547 ⋅63389.

It is a cyclic number.

It is not a de Polignac number, because 3877988401 - 2²⁹ = 3341117489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3877988701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276999165 + ... + 276999178.

It is an arithmetic number, because the mean of its divisors is an integer number (1107996688).

Almost surely, 2^3877988401 is an apocalyptic number.

It is an amenable number.

3877988401 is a deficient number, since it is larger than the sum of its proper divisors (553998351).

3877988401 is an equidigital number, since it uses as much as digits as its factorization.

3877988401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553998350.

The product of its (nonzero) digits is 2709504, while the sum is 55.

The square root of 3877988401 is about 62273.4967783246. The cubic root of 3877988401 is about 1571.0939947054.

The spelling of 3877988401 in words is "three billion, eight hundred seventy-seven million, nine hundred eighty-eight thousand, four hundred one".