139629816 has 24 divisors (see below), whose sum is σ = 378164280. Its totient is φ = 46543248.

The previous prime is 139629811. The next prime is 139629817. The reversal of 139629816 is 618926931.

It is a happy number.

139629816 is a `hidden beast` number, since 1 + 3 + 9 + 629 + 8 + 16 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139629811) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 969580 + ... + 969723.

It is an arithmetic number, because the mean of its divisors is an integer number (15756845).

Almost surely, 2^139629816 is an apocalyptic number.

It is an amenable number.

139629816 is an abundant number, since it is smaller than the sum of its proper divisors (238534464).

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

139629816 is a wasteful number, since it uses less digits than its factorization.

139629816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1939315 (or 1939308 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 139629816 is about 11816.5060825948. The cubic root of 139629816 is about 518.7913447281.

The spelling of 139629816 in words is "one hundred thirty-nine million, six hundred twenty-nine thousand, eight hundred sixteen".