7404391669 has 2 divisors, whose sum is σ = 7404391670. Its totient is φ = 7404391668.

The previous prime is 7404391663. The next prime is 7404391693. The reversal of 7404391669 is 9661934047.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6567157444 + 837234225 = 81038^2 + 28935^2 .

It is a cyclic number.

It is not a de Polignac number, because 7404391669 - 2³ = 7404391661 is a prime.

It is a super-2 number, since 2×7404391669² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7404391661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3702195834 + 3702195835.

It is an arithmetic number, because the mean of its divisors is an integer number (3702195835).

Almost surely, 2^7404391669 is an apocalyptic number.

It is an amenable number.

7404391669 is a deficient number, since it is larger than the sum of its proper divisors (1).

7404391669 is an equidigital number, since it uses as much as digits as its factorization.

7404391669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 49.

The square root of 7404391669 is about 86048.7749418898. The cubic root of 7404391669 is about 1949.0805807220.

The spelling of 7404391669 in words is "seven billion, four hundred four million, three hundred ninety-one thousand, six hundred sixty-nine".