139550653 has 4 divisors (see below), whose sum is σ = 152237088. Its totient is φ = 126864220.

The previous prime is 139550647. The next prime is 139550681. The reversal of 139550653 is 356055931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 139550653 - 2²¹ = 137453501 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 (139550633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6343201 + ... + 6343222.

It is an arithmetic number, because the mean of its divisors is an integer number (38059272).

Almost surely, 2^139550653 is an apocalyptic number.

It is an amenable number.

139550653 is a deficient number, since it is larger than the sum of its proper divisors (12686435).

139550653 is a wasteful number, since it uses less digits than its factorization.

139550653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12686434.

The product of its (nonzero) digits is 60750, while the sum is 37.

The square root of 139550653 is about 11813.1559288786. The cubic root of 139550653 is about 518.6932834300.

The spelling of 139550653 in words is "one hundred thirty-nine million, five hundred fifty thousand, six hundred fifty-three".