402999420698 has 8 divisors (see below), whose sum is σ = 690856149792. Its totient is φ = 172714037436.

The previous prime is 402999420679. The next prime is 402999420749. The reversal of 402999420698 is 896024999204.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 402999420698.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14392836440 + ... + 14392836467.

It is an arithmetic number, because the mean of its divisors is an integer number (86357018724).

Almost surely, 2^402999420698 is an apocalyptic number.

402999420698 is a deficient number, since it is larger than the sum of its proper divisors (287856729094).

402999420698 is a wasteful number, since it uses less digits than its factorization.

402999420698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28785672916.

The product of its (nonzero) digits is 20155392, while the sum is 62.

The spelling of 402999420698 in words is "four hundred two billion, nine hundred ninety-nine million, four hundred twenty thousand, six hundred ninety-eight".