40400004079 has 2 divisors, whose sum is σ = 40400004080. Its totient is φ = 40400004078.

The previous prime is 40400003993. The next prime is 40400004101. The reversal of 40400004079 is 97040000404.

40400004079 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40400004079 - 2¹¹ = 40400002031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40400034079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20200002039 + 20200002040.

It is an arithmetic number, because the mean of its divisors is an integer number (20200002040).

Almost surely, 2^40400004079 is an apocalyptic number.

40400004079 is a deficient number, since it is larger than the sum of its proper divisors (1).

40400004079 is an equidigital number, since it uses as much as digits as its factorization.

40400004079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

The spelling of 40400004079 in words is "forty billion, four hundred million, four thousand, seventy-nine".