921963497 has 16 divisors (see below), whose sum is σ = 1144778880. Its totient is φ = 723002112.

The previous prime is 921963491. The next prime is 921963541. The reversal of 921963497 is 794369129.

It is not a de Polignac number, because 921963497 - 2⁸ = 921963241 is a prime.

It is a super-3 number, since 3×921963497³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (921963491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34547 + ... + 55112.

It is an arithmetic number, because the mean of its divisors is an integer number (71548680).

Almost surely, 2^921963497 is an apocalyptic number.

It is an amenable number.

921963497 is a deficient number, since it is larger than the sum of its proper divisors (222815383).

921963497 is a wasteful number, since it uses less digits than its factorization.

921963497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89792.

The product of its digits is 734832, while the sum is 50.

The square root of 921963497 is about 30363.8518142873. The cubic root of 921963497 is about 973.2802458874.

The spelling of 921963497 in words is "nine hundred twenty-one million, nine hundred sixty-three thousand, four hundred ninety-seven".