405045044 has 6 divisors (see below), whose sum is σ = 708828834. Its totient is φ = 202522520.

The previous prime is 405044987. The next prime is 405045061. The reversal of 405045044 is 440540504.

It can be written as a sum of positive squares in only one way, i.e., 209380900 + 195664144 = 14470^2 + 13988^2 .

It is a super-2 number, since 2×405045044² = 328122975337923872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50630627 + ... + 50630634.

It is an arithmetic number, because the mean of its divisors is an integer number (118138139).

Almost surely, 2^405045044 is an apocalyptic number.

It is an amenable number.

405045044 is a deficient number, since it is larger than the sum of its proper divisors (303783790).

405045044 is a wasteful number, since it uses less digits than its factorization.

405045044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101261265 (or 101261263 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 405045044 is about 20125.7308935601. The cubic root of 405045044 is about 739.8910504321.

Adding to 405045044 its reverse (440540504), we get a palindrome (845585548).

It can be divided in two parts, 4050 and 45044, that added together give a palindrome (49094).

The spelling of 405045044 in words is "four hundred five million, forty-five thousand, forty-four".