7401409091 has 4 divisors (see below), whose sum is σ = 7401749784. Its totient is φ = 7401068400.

The previous prime is 7401409063. The next prime is 7401409097. The reversal of 7401409091 is 1909041047.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7401409091 - 2⁶ = 7401409027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7401409097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135365 + ... + 182006.

It is an arithmetic number, because the mean of its divisors is an integer number (1850437446).

Almost surely, 2^7401409091 is an apocalyptic number.

7401409091 is a deficient number, since it is larger than the sum of its proper divisors (340693).

7401409091 is a wasteful number, since it uses less digits than its factorization.

7401409091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340692.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 7401409091 is about 86031.4424556511. The cubic root of 7401409091 is about 1948.8188412099.

The spelling of 7401409091 in words is "seven billion, four hundred one million, four hundred nine thousand, ninety-one".