139604988402 has 64 divisors (see below), whose sum is σ = 339200939520. Its totient is φ = 42208966800.

The previous prime is 139604988401. The next prime is 139604988403. The reversal of 139604988402 is 204889406931.

139604988402 is a `hidden beast` number, since 13 + 9 + 60 + 498 + 84 + 0 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (139604988401) and next prime (139604988403).

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

It is not an unprimeable number, because it can be changed into a prime (139604988401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2124 + ... + 528407.

It is an arithmetic number, because the mean of its divisors is an integer number (5300014680).

Almost surely, 2^139604988402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139604988402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169600469760).

139604988402 is an abundant number, since it is smaller than the sum of its proper divisors (199595951118).

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

139604988402 is a wasteful number, since it uses less digits than its factorization.

139604988402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530996 (or 530990 counting only the distinct ones).

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

The spelling of 139604988402 in words is "one hundred thirty-nine billion, six hundred four million, nine hundred eighty-eight thousand, four hundred two".