281969401 has 16 divisors (see below), whose sum is σ = 326836224. Its totient is φ = 238271184.

The previous prime is 281969399. The next prime is 281969419. The reversal of 281969401 is 104969182.

It is a cyclic number.

It is not a de Polignac number, because 281969401 - 2¹ = 281969399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (281969491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188880 + ... + 190366.

It is an arithmetic number, because the mean of its divisors is an integer number (20427264).

Almost surely, 2^281969401 is an apocalyptic number.

It is an amenable number.

281969401 is a deficient number, since it is larger than the sum of its proper divisors (44866823).

281969401 is a wasteful number, since it uses less digits than its factorization.

281969401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1860.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 281969401 is about 16791.9445270642. The cubic root of 281969401 is about 655.7434992944.

The spelling of 281969401 in words is "two hundred eighty-one million, nine hundred sixty-nine thousand, four hundred one".