139426655 has 16 divisors (see below), whose sum is σ = 176476800. Its totient is φ = 105455520.

The previous prime is 139426649. The next prime is 139426657. The reversal of 139426655 is 556624931.

It is a de Polignac number, because none of the positive numbers 2^k-139426655 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139426657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57620 + ... + 59990.

It is an arithmetic number, because the mean of its divisors is an integer number (11029800).

Almost surely, 2^139426655 is an apocalyptic number.

139426655 is a deficient number, since it is larger than the sum of its proper divisors (37050145).

139426655 is a wasteful number, since it uses less digits than its factorization.

139426655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3014.

The product of its digits is 194400, while the sum is 41.

The square root of 139426655 is about 11807.9064613504. The cubic root of 139426655 is about 518.5396092684.

The spelling of 139426655 in words is "one hundred thirty-nine million, four hundred twenty-six thousand, six hundred fifty-five".