404550540 has 36 divisors (see below), whose sum is σ = 1227137184. Its totient is φ = 107880096.

The previous prime is 404550533. The next prime is 404550541. The reversal of 404550540 is 45055404.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×404550540² = 327322278828583200, which contains 22 as substring.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (404550541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1123572 + ... + 1123931.

It is an arithmetic number, because the mean of its divisors is an integer number (34087144).

Almost surely, 2^404550540 is an apocalyptic number.

It is an amenable number.

404550540 is an abundant number, since it is smaller than the sum of its proper divisors (822586644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

404550540 is a wasteful number, since it uses less digits than its factorization.

404550540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2247518 (or 2247513 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 404550540 is about 20113.4417740972. The cubic root of 404550540 is about 739.5898262544.

The spelling of 404550540 in words is "four hundred four million, five hundred fifty thousand, five hundred forty".