29400381 has 8 divisors (see below), whose sum is σ = 43556160. Its totient is φ = 19600236.

The previous prime is 29400379. The next prime is 29400389. The reversal of 29400381 is 18300492.

It is not a de Polignac number, because 29400381 - 2¹ = 29400379 is a prime.

It is a super-2 number, since 2×29400381² = 1728764805890322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1088903 = 29400381 / (2 + 9 + 4 + 0 + 0 + 3 + 8 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29400389) 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 7 ways as a sum of consecutive naturals, for example, 544425 + ... + 544478.

It is an arithmetic number, because the mean of its divisors is an integer number (5444520).

Almost surely, 2^29400381 is an apocalyptic number.

It is an amenable number.

29400381 is a deficient number, since it is larger than the sum of its proper divisors (14155779).

29400381 is a wasteful number, since it uses less digits than its factorization.

29400381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088912 (or 1088906 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 29400381 is about 5422.2118180683. The cubic root of 29400381 is about 308.6391300414.

The spelling of 29400381 in words is "twenty-nine million, four hundred thousand, three hundred eighty-one".