404978101 has 8 divisors (see below), whose sum is σ = 445705344. Its totient is φ = 364902720.

The previous prime is 404978071. The next prime is 404978111. The reversal of 404978101 is 101879404.

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 404978101 - 2⁷ = 404977973 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 (404978111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161661 + ... + 164146.

It is an arithmetic number, because the mean of its divisors is an integer number (55713168).

Almost surely, 2^404978101 is an apocalyptic number.

It is an amenable number.

404978101 is a deficient number, since it is larger than the sum of its proper divisors (40727243).

404978101 is a wasteful number, since it uses less digits than its factorization.

404978101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325931.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 404978101 is about 20124.0677051137. The cubic root of 404978101 is about 739.8502868543.

The spelling of 404978101 in words is "four hundred four million, nine hundred seventy-eight thousand, one hundred one".