1405561434 has 16 divisors (see below), whose sum is σ = 2820720672. Its totient is φ = 466920848.

The previous prime is 1405561427. The next prime is 1405561463. The reversal of 1405561434 is 4341655041.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1405561395 and 1405561404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398004 + ... + 401519.

It is an arithmetic number, because the mean of its divisors is an integer number (176295042).

Almost surely, 2^1405561434 is an apocalyptic number.

1405561434 is an abundant number, since it is smaller than the sum of its proper divisors (1415159238).

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

1405561434 is a wasteful number, since it uses less digits than its factorization.

1405561434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799821.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 1405561434 is about 37490.8179958773. The cubic root of 1405561434 is about 1120.1682979448.

The spelling of 1405561434 in words is "one billion, four hundred five million, five hundred sixty-one thousand, four hundred thirty-four".