16861429 has 8 divisors (see below), whose sum is σ = 18190872. Its totient is φ = 15536640.

The previous prime is 16861387. The next prime is 16861447. The reversal of 16861429 is 92416861.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10404 + 16851025 = 102^2 + 4105^2 .

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 16861429 - 2⁷ = 16861301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16861129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11709 + ... + 13069.

It is an arithmetic number, because the mean of its divisors is an integer number (2273859).

Almost surely, 2^16861429 is an apocalyptic number.

It is an amenable number.

16861429 is a deficient number, since it is larger than the sum of its proper divisors (1329443).

16861429 is a wasteful number, since it uses less digits than its factorization.

16861429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2327.

The product of its digits is 20736, while the sum is 37.

The square root of 16861429 is about 4106.2670395385. The cubic root of 16861429 is about 256.4276147950.

The spelling of 16861429 in words is "sixteen million, eight hundred sixty-one thousand, four hundred twenty-nine".