921743983 has 2 divisors, whose sum is σ = 921743984. Its totient is φ = 921743982.

The previous prime is 921743957. The next prime is 921744053. The reversal of 921743983 is 389347129.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 921743983 - 2⁵ = 921743951 is a prime.

It is a super-2 number, since 2×921743983² = 1699223940393408578, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (921743923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460871991 + 460871992.

It is an arithmetic number, because the mean of its divisors is an integer number (460871992).

Almost surely, 2^921743983 is an apocalyptic number.

921743983 is a deficient number, since it is larger than the sum of its proper divisors (1).

921743983 is an equidigital number, since it uses as much as digits as its factorization.

921743983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 46.

The square root of 921743983 is about 30360.2368732525. The cubic root of 921743983 is about 973.2029956857.

The spelling of 921743983 in words is "nine hundred twenty-one million, seven hundred forty-three thousand, nine hundred eighty-three".