7400093605921 has 2 divisors, whose sum is σ = 7400093605922. Its totient is φ = 7400093605920.

The previous prime is 7400093605813. The next prime is 7400093605937. The reversal of 7400093605921 is 1295063900047.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6485736917521 + 914356688400 = 2546711^2 + 956220^2 .

It is a cyclic number.

It is not a de Polignac number, because 7400093605921 - 2¹⁷ = 7400093474849 is a prime.

It is a super-3 number, since 3×7400093605921³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (7400093605321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3700046802960 + 3700046802961.

It is an arithmetic number, because the mean of its divisors is an integer number (3700046802961).

Almost surely, 2^{7400093605921} is an apocalyptic number.

It is an amenable number.

7400093605921 is a deficient number, since it is larger than the sum of its proper divisors (1).

7400093605921 is an equidigital number, since it uses as much as digits as its factorization.

7400093605921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 46.

The spelling of 7400093605921 in words is "seven trillion, four hundred billion, ninety-three million, six hundred five thousand, nine hundred twenty-one".