34881639 has 32 divisors (see below), whose sum is σ = 53727744. Its totient is φ = 19958400.

The previous prime is 34881601. The next prime is 34881641. The reversal of 34881639 is 93618843.

It is a happy number.

It is not a de Polignac number, because 34881639 - 2⁸ = 34881383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 34881639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34881139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32664 + ... + 33714.

It is an arithmetic number, because the mean of its divisors is an integer number (1678992).

Almost surely, 2^34881639 is an apocalyptic number.

34881639 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

34881639 is a deficient number, since it is larger than the sum of its proper divisors (18846105).

34881639 is a wasteful number, since it uses less digits than its factorization.

34881639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127.

The product of its digits is 124416, while the sum is 42.

The square root of 34881639 is about 5906.0679813223. The cubic root of 34881639 is about 326.7374844150.

The spelling of 34881639 in words is "thirty-four million, eight hundred eighty-one thousand, six hundred thirty-nine".