16429481 has 2 divisors, whose sum is σ = 16429482. Its totient is φ = 16429480.

The previous prime is 16429477. The next prime is 16429487. The reversal of 16429481 is 18492461.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14891881 + 1537600 = 3859^2 + 1240^2 .

It is a cyclic number.

It is not a de Polignac number, because 16429481 - 2² = 16429477 is a prime.

It is a super-2 number, since 2×16429481² = 539855691858722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16429487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8214740 + 8214741.

It is an arithmetic number, because the mean of its divisors is an integer number (8214741).

Almost surely, 2^16429481 is an apocalyptic number.

It is an amenable number.

16429481 is a deficient number, since it is larger than the sum of its proper divisors (1).

16429481 is an equidigital number, since it uses as much as digits as its factorization.

16429481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 35.

The square root of 16429481 is about 4053.3296189676. The cubic root of 16429481 is about 254.2189661197.

The spelling of 16429481 in words is "sixteen million, four hundred twenty-nine thousand, four hundred eighty-one".