139033961 has 12 divisors (see below), whose sum is σ = 153145776. Its totient is φ = 126127320.

The previous prime is 139033949. The next prime is 139033997. The reversal of 139033961 is 169330931.

139033961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 139033961 - 2²² = 134839657 is a prime.

It is a super-2 number, since 2×139033961² = 38660884622699042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139033561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76910 + ... + 78696.

It is an arithmetic number, because the mean of its divisors is an integer number (12762148).

Almost surely, 2^139033961 is an apocalyptic number.

139033961 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

139033961 is a deficient number, since it is larger than the sum of its proper divisors (14111815).

139033961 is a wasteful number, since it uses less digits than its factorization.

139033961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2452 (or 2441 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 35.

The square root of 139033961 is about 11791.2663018015. The cubic root of 139033961 is about 518.0523306950.

The spelling of 139033961 in words is "one hundred thirty-nine million, thirty-three thousand, nine hundred sixty-one".