402839649108 has 384 divisors, whose sum is σ = 1189201305600. Its totient is φ = 117086777856.

The previous prime is 402839649101. The next prime is 402839649109. The reversal of 402839649108 is 801946938204.

402839649108 is a `hidden beast` number, since 40 + 28 + 3 + 96 + 491 + 0 + 8 = 666.

It is a super-3 number, since 3×402839649108³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402839649101) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 339375691 + ... + 339376877.

It is an arithmetic number, because the mean of its divisors is an integer number (3096878400).

Almost surely, 2^402839649108 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 402839649108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (594600652800).

402839649108 is an abundant number, since it is smaller than the sum of its proper divisors (786361656492).

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

402839649108 is a wasteful number, since it uses less digits than its factorization.

402839649108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1436 (or 1428 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 402839649108 in words is "four hundred two billion, eight hundred thirty-nine million, six hundred forty-nine thousand, one hundred eight".