404002445 has 64 divisors (see below), whose sum is σ = 630374400. Its totient is φ = 241263360.

The previous prime is 404002439. The next prime is 404002477. The reversal of 404002445 is 544200404.

It is not a de Polignac number, because 404002445 - 2⁸ = 404002189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 404002445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1125176 + ... + 1125534.

It is an arithmetic number, because the mean of its divisors is an integer number (9849600).

Almost surely, 2^404002445 is an apocalyptic number.

It is an amenable number.

404002445 is a deficient number, since it is larger than the sum of its proper divisors (226371955).

404002445 is a wasteful number, since it uses less digits than its factorization.

404002445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498.

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 404002445 is about 20099.8120637980. The cubic root of 404002445 is about 739.2556704856.

Adding to 404002445 its reverse (544200404), we get a palindrome (948202849).

The spelling of 404002445 in words is "four hundred four million, two thousand, four hundred forty-five".