406922887 has 8 divisors (see below), whose sum is σ = 472679072. Its totient is φ = 343072800.

The previous prime is 406922881. The next prime is 406922899. The reversal of 406922887 is 788229604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 406922887 - 2²⁷ = 272705159 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 (406922881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476064 + ... + 476917.

It is an arithmetic number, because the mean of its divisors is an integer number (59084884).

Almost surely, 2^406922887 is an apocalyptic number.

406922887 is the 11647-th hex number.

406922887 is a deficient number, since it is larger than the sum of its proper divisors (65756185).

406922887 is an equidigital number, since it uses as much as digits as its factorization.

406922887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953049.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 406922887 is about 20172.3297365475. The cubic root of 406922887 is about 741.0326992575.

The spelling of 406922887 in words is "four hundred six million, nine hundred twenty-two thousand, eight hundred eighty-seven".