890400223544 has 24 divisors (see below), whose sum is σ = 1807802231760. Its totient is φ = 410953948704.

The previous prime is 890400223513. The next prime is 890400223547. The reversal of 890400223544 is 445322004098.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (890400223547) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 329288672 + ... + 329291375.

It is an arithmetic number, because the mean of its divisors is an integer number (75325092990).

Almost surely, 2^890400223544 is an apocalyptic number.

It is an amenable number.

890400223544 is an abundant number, since it is smaller than the sum of its proper divisors (917402008216).

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

890400223544 is a wasteful number, since it uses less digits than its factorization.

890400223544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658580079 (or 658580062 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 41.

The spelling of 890400223544 in words is "eight hundred ninety billion, four hundred million, two hundred twenty-three thousand, five hundred forty-four".