34003981 has 8 divisors (see below), whose sum is σ = 37260000. Its totient is φ = 30775440.

The previous prime is 34003969. The next prime is 34003997. The reversal of 34003981 is 18930043.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 34003981 - 2¹³ = 33995789 is a prime.

It is a super-2 number, since 2×34003981² = 2312541447696722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34003951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4231 + ... + 9268.

It is an arithmetic number, because the mean of its divisors is an integer number (4657500).

Almost surely, 2^34003981 is an apocalyptic number.

It is an amenable number.

34003981 is a deficient number, since it is larger than the sum of its proper divisors (3256019).

34003981 is a wasteful number, since it uses less digits than its factorization.

34003981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13739.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 34003981 is about 5831.2932527871. The cubic root of 34003981 is about 323.9738236486.

It can be divided in two parts, 3400 and 3981, that added together give a triangular number (7381 = T₁₂₁).

The spelling of 34003981 in words is "thirty-four million, three thousand, nine hundred eighty-one".