406422077 has 8 divisors (see below), whose sum is σ = 437384952. Its totient is φ = 376243200.

The previous prime is 406422061. The next prime is 406422109. The reversal of 406422077 is 770224604.

It can be written as a sum of positive squares in 4 ways, for example, as 119661721 + 286760356 = 10939^2 + 16934^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 406422077 - 2⁴ = 406422061 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 (406422007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194924 + ... + 196997.

It is an arithmetic number, because the mean of its divisors is an integer number (54673119).

Almost surely, 2^406422077 is an apocalyptic number.

It is an amenable number.

406422077 is a deficient number, since it is larger than the sum of its proper divisors (30962875).

406422077 is a wasteful number, since it uses less digits than its factorization.

406422077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391999.

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 406422077 is about 20159.9126238186. The cubic root of 406422077 is about 740.7285720714.

The spelling of 406422077 in words is "four hundred six million, four hundred twenty-two thousand, seventy-seven".