921353980 has 24 divisors (see below), whose sum is σ = 1935425520. Its totient is φ = 368430720.

The previous prime is 921353977. The next prime is 921353989. The reversal of 921353980 is 89353129.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (921353989) 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, 106456 + ... + 114784.

It is an arithmetic number, because the mean of its divisors is an integer number (80642730).

Almost surely, 2^921353980 is an apocalyptic number.

It is an amenable number.

921353980 is an abundant number, since it is smaller than the sum of its proper divisors (1014071540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

921353980 is a wasteful number, since it uses less digits than its factorization.

921353980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13869 (or 13867 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 921353980 is about 30353.8132695054. The cubic root of 921353980 is about 973.0657176422.

The spelling of 921353980 in words is "nine hundred twenty-one million, three hundred fifty-three thousand, nine hundred eighty".