1406988864 has 84 divisors (see below), whose sum is σ = 4038478080. Its totient is φ = 468345600.

The previous prime is 1406988829. The next prime is 1406988889. The reversal of 1406988864 is 4688896041.

It is a self number, because there is not a number n which added to its sum of digits gives 1406988864.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 597289 + ... + 599639.

It is an arithmetic number, because the mean of its divisors is an integer number (48077120).

Almost surely, 2^1406988864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1406988864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2019239040).

1406988864 is an abundant number, since it is smaller than the sum of its proper divisors (2631489216).

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

1406988864 is a wasteful number, since it uses less digits than its factorization.

1406988864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3408 (or 3395 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 54.

The square root of 1406988864 is about 37509.8502263072. The cubic root of 1406988864 is about 1120.5473684999.

The spelling of 1406988864 in words is "one billion, four hundred six million, nine hundred eighty-eight thousand, eight hundred sixty-four".