16147409 has 2 divisors, whose sum is σ = 16147410. Its totient is φ = 16147408.

The previous prime is 16147393. The next prime is 16147423. The reversal of 16147409 is 90474161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14592400 + 1555009 = 3820^2 + 1247^2 .

It is an emirp because it is prime and its reverse (90474161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16147409 - 2⁴ = 16147393 is a prime.

It is equal to p_1039991 and since 16147409 and 1039991 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (16147009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8073704 + 8073705.

It is an arithmetic number, because the mean of its divisors is an integer number (8073705).

Almost surely, 2^16147409 is an apocalyptic number.

It is an amenable number.

16147409 is a deficient number, since it is larger than the sum of its proper divisors (1).

16147409 is an equidigital number, since it uses as much as digits as its factorization.

16147409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 16147409 is about 4018.3838791235. The cubic root of 16147409 is about 252.7556943215.

The spelling of 16147409 in words is "sixteen million, one hundred forty-seven thousand, four hundred nine".