4020040100399 has 2 divisors, whose sum is σ = 4020040100400. Its totient is φ = 4020040100398.

The previous prime is 4020040100387. The next prime is 4020040100431. The reversal of 4020040100399 is 9930010400204.

It is a happy number.

It is an a-pointer prime, because the next prime (4020040100431) can be obtained adding 4020040100399 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4020040100399 - 2⁸ = 4020040100143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4020040100369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010020050199 + 2010020050200.

It is an arithmetic number, because the mean of its divisors is an integer number (2010020050200).

Almost surely, 2^{4020040100399} is an apocalyptic number.

4020040100399 is a deficient number, since it is larger than the sum of its proper divisors (1).

4020040100399 is an equidigital number, since it uses as much as digits as its factorization.

4020040100399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The spelling of 4020040100399 in words is "four trillion, twenty billion, forty million, one hundred thousand, three hundred ninety-nine".