9149326421 has 2 divisors, whose sum is σ = 9149326422. Its totient is φ = 9149326420.

The previous prime is 9149326399. The next prime is 9149326427. The reversal of 9149326421 is 1246239419.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9103831396 + 45495025 = 95414^2 + 6745^2 .

It is a cyclic number.

It is not a de Polignac number, because 9149326421 - 2¹⁰ = 9149325397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9149326427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4574663210 + 4574663211.

It is an arithmetic number, because the mean of its divisors is an integer number (4574663211).

Almost surely, 2^9149326421 is an apocalyptic number.

It is an amenable number.

9149326421 is a deficient number, since it is larger than the sum of its proper divisors (1).

9149326421 is an equidigital number, since it uses as much as digits as its factorization.

9149326421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 41.

The square root of 9149326421 is about 95652.1114299104. Note that the first 3 decimals coincide. The cubic root of 9149326421 is about 2091.5249069058.

The spelling of 9149326421 in words is "nine billion, one hundred forty-nine million, three hundred twenty-six thousand, four hundred twenty-one".