1405227479144 has 8 divisors (see below), whose sum is σ = 2634801523410. Its totient is φ = 702613739568.

The previous prime is 1405227479129. The next prime is 1405227479147. The reversal of 1405227479144 is 4419747225041.

It can be written as a sum of positive squares in only one way, i.e., 1265089556644 + 140137922500 = 1124762^2 + 374350^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1405227479092 and 1405227479101.

It is not an unprimeable number, because it can be changed into a prime (1405227479147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 87826717439 + ... + 87826717454.

Almost surely, 2^{1405227479144} is an apocalyptic number.

It is an amenable number.

1405227479144 is a deficient number, since it is larger than the sum of its proper divisors (1229574044266).

1405227479144 is a wasteful number, since it uses less digits than its factorization.

1405227479144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175653434899 (or 175653434895 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 50.

The spelling of 1405227479144 in words is "one trillion, four hundred five billion, two hundred twenty-seven million, four hundred seventy-nine thousand, one hundred forty-four".