4021400077 has 2 divisors, whose sum is σ = 4021400078. Its totient is φ = 4021400076.

The previous prime is 4021400023. The next prime is 4021400087. The reversal of 4021400077 is 7700041204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2856474916 + 1164925161 = 53446^2 + 34131^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4021400077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4021400087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010700038 + 2010700039.

It is an arithmetic number, because the mean of its divisors is an integer number (2010700039).

Almost surely, 2^4021400077 is an apocalyptic number.

It is an amenable number.

4021400077 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021400077 is an equidigital number, since it uses as much as digits as its factorization.

4021400077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 4021400077 is about 63414.5099878569. The cubic root of 4021400077 is about 1590.2268939025.

The spelling of 4021400077 in words is "four billion, twenty-one million, four hundred thousand, seventy-seven".