7401404909 has 2 divisors, whose sum is σ = 7401404910. Its totient is φ = 7401404908.

The previous prime is 7401404891. The next prime is 7401404921. The reversal of 7401404909 is 9094041047.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3958297225 + 3443107684 = 62915^2 + 58678^2 .

It is a cyclic number.

It is not a de Polignac number, because 7401404909 - 2⁸ = 7401404653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7401404939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3700702454 + 3700702455.

It is an arithmetic number, because the mean of its divisors is an integer number (3700702455).

Almost surely, 2^7401404909 is an apocalyptic number.

It is an amenable number.

7401404909 is a deficient number, since it is larger than the sum of its proper divisors (1).

7401404909 is an equidigital number, since it uses as much as digits as its factorization.

7401404909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 7401404909 is about 86031.4181505803. The cubic root of 7401404909 is about 1948.8184741644.

The spelling of 7401404909 in words is "seven billion, four hundred one million, four hundred four thousand, nine hundred nine".