402690489240 has 96 divisors (see below), whose sum is σ = 1308148459920. Its totient is φ = 99123807744.

The previous prime is 402690489239. The next prime is 402690489259. The reversal of 402690489240 is 42984096204.

402690489240 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 402690489240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9907987 + ... + 9948546.

Almost surely, 2^402690489240 is an apocalyptic number.

402690489240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402690489240 is an abundant number, since it is smaller than the sum of its proper divisors (905457970680).

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

402690489240 is a wasteful number, since it uses less digits than its factorization.

402690489240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19856573 (or 19856556 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 48.

The spelling of 402690489240 in words is "four hundred two billion, six hundred ninety million, four hundred eighty-nine thousand, two hundred forty".