29519421409 has 2 divisors, whose sum is σ = 29519421410. Its totient is φ = 29519421408.

The previous prime is 29519421391. The next prime is 29519421457. The reversal of 29519421409 is 90412491592.

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., 27322437025 + 2196984384 = 165295^2 + 46872^2 .

It is a cyclic number.

It is not a de Polignac number, because 29519421409 - 2⁵ = 29519421377 is a prime.

It is not a weakly prime, because it can be changed into another prime (29519421479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14759710704 + 14759710705.

It is an arithmetic number, because the mean of its divisors is an integer number (14759710705).

Almost surely, 2^29519421409 is an apocalyptic number.

It is an amenable number.

29519421409 is a deficient number, since it is larger than the sum of its proper divisors (1).

29519421409 is an equidigital number, since it uses as much as digits as its factorization.

29519421409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 46.

The spelling of 29519421409 in words is "twenty-nine billion, five hundred nineteen million, four hundred twenty-one thousand, four hundred nine".