921929101 has 4 divisors (see below), whose sum is σ = 922146012. Its totient is φ = 921712192.

The previous prime is 921929081. The next prime is 921929143. The reversal of 921929101 is 101929129.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 404412100 + 517517001 = 20110^2 + 22749^2 .

It is a cyclic number.

It is not a de Polignac number, because 921929101 - 2⁵ = 921929069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (921929501) 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 3 ways as a sum of consecutive naturals, for example, 101950 + ... + 110623.

It is an arithmetic number, because the mean of its divisors is an integer number (230536503).

Almost surely, 2^921929101 is an apocalyptic number.

It is an amenable number.

921929101 is a deficient number, since it is larger than the sum of its proper divisors (216911).

921929101 is a wasteful number, since it uses less digits than its factorization.

921929101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216910.

The product of its (nonzero) digits is 2916, while the sum is 34.

The square root of 921929101 is about 30363.2854118259. The cubic root of 921929101 is about 973.2681422399.

The spelling of 921929101 in words is "nine hundred twenty-one million, nine hundred twenty-nine thousand, one hundred one".