139061963 has 4 divisors (see below), whose sum is σ = 139144488. Its totient is φ = 138979440.

The previous prime is 139061941. The next prime is 139062017. The reversal of 139061963 is 369160931.

139061963 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 369160931 = 2393 ⋅154267.

It is a cyclic number.

It is not a de Polignac number, because 139061963 - 2¹⁴ = 139045579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139061903) 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, 38681 + ... + 42122.

It is an arithmetic number, because the mean of its divisors is an integer number (34786122).

Almost surely, 2^139061963 is an apocalyptic number.

139061963 is a deficient number, since it is larger than the sum of its proper divisors (82525).

139061963 is an equidigital number, since it uses as much as digits as its factorization.

139061963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82524.

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 139061963 is about 11792.4536462943. The cubic root of 139061963 is about 518.0871076360.

The spelling of 139061963 in words is "one hundred thirty-nine million, sixty-one thousand, nine hundred sixty-three".