921315441 has 8 divisors (see below), whose sum is σ = 1229818464. Its totient is φ = 613511360.

The previous prime is 921315427. The next prime is 921315449. The reversal of 921315441 is 144513129.

921315441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 921315441 - 2¹⁸ = 921053297 is a prime.

It is a super-3 number, since 3×921315441³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 921315399 and 921315408.

It is not an unprimeable number, because it can be changed into a prime (921315449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171651 + ... + 176936.

It is an arithmetic number, because the mean of its divisors is an integer number (153727308).

Almost surely, 2^921315441 is an apocalyptic number.

It is an amenable number.

921315441 is a deficient number, since it is larger than the sum of its proper divisors (308503023).

921315441 is a wasteful number, since it uses less digits than its factorization.

921315441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349471.

The product of its digits is 4320, while the sum is 30.

The square root of 921315441 is about 30353.1784332383. The cubic root of 921315441 is about 973.0521501089.

The spelling of 921315441 in words is "nine hundred twenty-one million, three hundred fifteen thousand, four hundred forty-one".