404999997 has 4 divisors (see below), whose sum is σ = 540000000. Its totient is φ = 269999996.

The previous prime is 404999983. The next prime is 405000041. The reversal of 404999997 is 799999404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 404999997 - 2⁴ = 404999981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 404999997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404999957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67499997 + ... + 67500002.

It is an arithmetic number, because the mean of its divisors is an integer number (135000000).

Almost surely, 2^404999997 is an apocalyptic number.

It is an amenable number.

404999997 is a deficient number, since it is larger than the sum of its proper divisors (135000003).

404999997 is a wasteful number, since it uses less digits than its factorization.

404999997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135000002.

The product of its (nonzero) digits is 6613488, while the sum is 60.

The square root of 404999997 is about 20124.6117229625. The cubic root of 404999997 is about 739.8636204723.

The spelling of 404999997 in words is "four hundred four million, nine hundred ninety-nine thousand, nine hundred ninety-seven".