7900043401 has 2 divisors, whose sum is σ = 7900043402. Its totient is φ = 7900043400.

The previous prime is 7900043387. The next prime is 7900043423. The reversal of 7900043401 is 1043400097.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7096377600 + 803665801 = 84240^2 + 28349^2 .

It is an emirp because it is prime and its reverse (1043400097) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7900043401 - 2⁵ = 7900043369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7900043401.

It is not a weakly prime, because it can be changed into another prime (7900047401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3950021700 + 3950021701.

It is an arithmetic number, because the mean of its divisors is an integer number (3950021701).

Almost surely, 2^7900043401 is an apocalyptic number.

It is an amenable number.

7900043401 is a deficient number, since it is larger than the sum of its proper divisors (1).

7900043401 is an equidigital number, since it uses as much as digits as its factorization.

7900043401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 7900043401 is about 88882.1883225205. The cubic root of 7900043401 is about 1991.6353484903.

Adding to 7900043401 its reverse (1043400097), we get a palindrome (8943443498).

The spelling of 7900043401 in words is "seven billion, nine hundred million, forty-three thousand, four hundred one".