139293055 has 8 divisors (see below), whose sum is σ = 182347344. Its totient is φ = 101304000.

The previous prime is 139293043. The next prime is 139293059. The reversal of 139293055 is 550392931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 139293055 - 2⁷ = 139292927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139293059) 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, 1266246 + ... + 1266355.

It is an arithmetic number, because the mean of its divisors is an integer number (22793418).

Almost surely, 2^139293055 is an apocalyptic number.

139293055 is a deficient number, since it is larger than the sum of its proper divisors (43054289).

139293055 is a wasteful number, since it uses less digits than its factorization.

139293055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2532617.

The product of its (nonzero) digits is 36450, while the sum is 37.

The square root of 139293055 is about 11802.2478791118. The cubic root of 139293055 is about 518.3739330787.

It can be divided in two parts, 1392 and 93055, that multiplied together give a triangular number (129532560 = T₁₆₀₉₅).

The spelling of 139293055 in words is "one hundred thirty-nine million, two hundred ninety-three thousand, fifty-five".