1405479678 has 16 divisors (see below), whose sum is σ = 2846542080. Its totient is φ = 462562776.

The previous prime is 1405479629. The next prime is 1405479679. The reversal of 1405479678 is 8769745041.

It is a self number, because there is not a number n which added to its sum of digits gives 1405479678.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1405479679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1482100 + ... + 1483047.

It is an arithmetic number, because the mean of its divisors is an integer number (177908880).

Almost surely, 2^1405479678 is an apocalyptic number.

1405479678 is an abundant number, since it is smaller than the sum of its proper divisors (1441062402).

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

1405479678 is a wasteful number, since it uses less digits than its factorization.

1405479678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2965231.

The product of its (nonzero) digits is 1693440, while the sum is 51.

The square root of 1405479678 is about 37489.7276330464. The cubic root of 1405479678 is about 1120.1465789238.

The spelling of 1405479678 in words is "one billion, four hundred five million, four hundred seventy-nine thousand, six hundred seventy-eight".