139765812 has 12 divisors (see below), whose sum is σ = 326120256. Its totient is φ = 46588600.

The previous prime is 139765793. The next prime is 139765831. The reversal of 139765812 is 218567931.

It is an interprime number because it is at equal distance from previous prime (139765793) and next prime (139765831).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 5823564 + ... + 5823587.

It is an arithmetic number, because the mean of its divisors is an integer number (27176688).

Almost surely, 2^139765812 is an apocalyptic number.

139765812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

139765812 is an abundant number, since it is smaller than the sum of its proper divisors (186354444).

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

139765812 is a wasteful number, since it uses less digits than its factorization.

139765812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11647158 (or 11647156 counting only the distinct ones).

The product of its digits is 90720, while the sum is 42.

The square root of 139765812 is about 11822.2591749631. The cubic root of 139765812 is about 518.9597200707.

The spelling of 139765812 in words is "one hundred thirty-nine million, seven hundred sixty-five thousand, eight hundred twelve".