1402879840 has 24 divisors (see below), whose sum is σ = 3314304000. Its totient is φ = 561151872.

The previous prime is 1402879817. The next prime is 1402879853. The reversal of 1402879840 is 489782041.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4383840 + ... + 4384159.

It is an arithmetic number, because the mean of its divisors is an integer number (138096000).

Almost surely, 2^1402879840 is an apocalyptic number.

1402879840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1402879840 is an abundant number, since it is smaller than the sum of its proper divisors (1911424160).

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

1402879840 is an equidigital number, since it uses as much as digits as its factorization.

1402879840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8768014 (or 8768006 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 1402879840 is about 37455.0375784086. The cubic root of 1402879840 is about 1119.4554751001.

The spelling of 1402879840 in words is "one billion, four hundred two million, eight hundred seventy-nine thousand, eight hundred forty".