1408989678 has 16 divisors (see below), whose sum is σ = 2830076496. Its totient is φ = 467647040.

The previous prime is 1408989629. The next prime is 1408989691. The reversal of 1408989678 is 8769898041.

It is a congruent number.

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, 502533 + ... + 505328.

It is an arithmetic number, because the mean of its divisors is an integer number (176879781).

Almost surely, 2^1408989678 is an apocalyptic number.

1408989678 is an abundant number, since it is smaller than the sum of its proper divisors (1421086818).

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

1408989678 is a wasteful number, since it uses less digits than its factorization.

1408989678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008099.

The product of its (nonzero) digits is 6967296, while the sum is 60.

The square root of 1408989678 is about 37536.5112656997. The cubic root of 1408989678 is about 1121.0782765042.

The spelling of 1408989678 in words is "one billion, four hundred eight million, nine hundred eighty-nine thousand, six hundred seventy-eight".