406981577 has 8 divisors (see below), whose sum is σ = 430772160. Its totient is φ = 383428080.

The previous prime is 406981543. The next prime is 406981583. The reversal of 406981577 is 775189604.

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 406981577 - 2⁸ = 406981321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (406981277) 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, 55733 + ... + 62610.

It is an arithmetic number, because the mean of its divisors is an integer number (53846520).

Almost surely, 2^406981577 is an apocalyptic number.

It is an amenable number.

406981577 is a deficient number, since it is larger than the sum of its proper divisors (23790583).

406981577 is a wasteful number, since it uses less digits than its factorization.

406981577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118543.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 406981577 is about 20173.7843995617. The cubic root of 406981577 is about 741.0683236307.

The spelling of 406981577 in words is "four hundred six million, nine hundred eighty-one thousand, five hundred seventy-seven".