34139961 has 20 divisors (see below), whose sum is σ = 54001332. Its totient is φ = 21420288.

The previous prime is 34139957. The next prime is 34139969. The reversal of 34139961 is 16993143.

34139961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 30735936 + 3404025 = 5544^2 + 1845^2 .

It is not a de Polignac number, because 34139961 - 2² = 34139957 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (34139969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11020 + ... + 13773.

Almost surely, 2^34139961 is an apocalyptic number.

It is an amenable number.

34139961 is a deficient number, since it is larger than the sum of its proper divisors (19861371).

34139961 is a wasteful number, since it uses less digits than its factorization.

34139961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24822 (or 24813 counting only the distinct ones).

The product of its digits is 17496, while the sum is 36.

The square root of 34139961 is about 5842.9411258372. The cubic root of 34139961 is about 324.4051002840.

The spelling of 34139961 in words is "thirty-four million, one hundred thirty-nine thousand, nine hundred sixty-one".