406922843 has 2 divisors, whose sum is σ = 406922844. Its totient is φ = 406922842.

The previous prime is 406922777. The next prime is 406922861. The reversal of 406922843 is 348229604.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 406922843 - 2¹⁸ = 406660699 is a prime.

It is a super-3 number, since 3×406922843³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 406922797 and 406922806.

It is not a weakly prime, because it can be changed into another prime (406922143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203461421 + 203461422.

It is an arithmetic number, because the mean of its divisors is an integer number (203461422).

Almost surely, 2^406922843 is an apocalyptic number.

406922843 is a deficient number, since it is larger than the sum of its proper divisors (1).

406922843 is an equidigital number, since it uses as much as digits as its factorization.

406922843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 406922843 is about 20172.3286459447. The cubic root of 406922843 is about 741.0326725486.

The spelling of 406922843 in words is "four hundred six million, nine hundred twenty-two thousand, eight hundred forty-three".