139948404990 has 16 divisors (see below), whose sum is σ = 335876172048. Its totient is φ = 37319574656.

The previous prime is 139948404977. The next prime is 139948404991. The reversal of 139948404990 is 99404849931.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139948404991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2332473387 + ... + 2332473446.

It is an arithmetic number, because the mean of its divisors is an integer number (20992260753).

Almost surely, 2^139948404990 is an apocalyptic number.

139948404990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139948404990 is an abundant number, since it is smaller than the sum of its proper divisors (195927767058).

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

139948404990 is a wasteful number, since it uses less digits than its factorization.

139948404990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4664946843.

The product of its (nonzero) digits is 10077696, while the sum is 60.

The spelling of 139948404990 in words is "one hundred thirty-nine billion, nine hundred forty-eight million, four hundred four thousand, nine hundred ninety".