1402939440 has 400 divisors, whose sum is σ = 5632621632. Its totient is φ = 317011968.

The previous prime is 1402939411. The next prime is 1402939459. The reversal of 1402939440 is 449392041.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1402939395 and 1402939404.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 7121422 + ... + 7121618.

Almost surely, 2^1402939440 is an apocalyptic number.

1402939440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1402939440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2816310816).

1402939440 is an abundant number, since it is smaller than the sum of its proper divisors (4229682192).

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

1402939440 is a wasteful number, since it uses less digits than its factorization.

1402939440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386 (or 371 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 1402939440 is about 37455.8331905726. The cubic root of 1402939440 is about 1119.4713278718.

The spelling of 1402939440 in words is "one billion, four hundred two million, nine hundred thirty-nine thousand, four hundred forty".