406699776 has 216 divisors, whose sum is σ = 1357085184. Its totient is φ = 114739200.

The previous prime is 406699753. The next prime is 406699837. The reversal of 406699776 is 677996604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2435245 + ... + 2435411.

Almost surely, 2^406699776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 406699776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (678542592).

406699776 is an abundant number, since it is smaller than the sum of its proper divisors (950385408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

406699776 is a wasteful number, since it uses less digits than its factorization.

406699776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347 (or 330 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 54.

The square root of 406699776 is about 20166.7988535613. The cubic root of 406699776 is about 740.8972413467.

The spelling of 406699776 in words is "four hundred six million, six hundred ninety-nine thousand, seven hundred seventy-six".