434736649 has 2 divisors, whose sum is σ = 434736650. Its totient is φ = 434736648.

The previous prime is 434736641. The next prime is 434736683. The reversal of 434736649 is 946637434.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 345774025 + 88962624 = 18595^2 + 9432^2 .

It is a cyclic number.

It is not a de Polignac number, because 434736649 - 2³ = 434736641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 434736599 and 434736608.

It is not a weakly prime, because it can be changed into another prime (434736641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217368324 + 217368325.

It is an arithmetic number, because the mean of its divisors is an integer number (217368325).

Almost surely, 2^434736649 is an apocalyptic number.

It is an amenable number.

434736649 is a deficient number, since it is larger than the sum of its proper divisors (1).

434736649 is an equidigital number, since it uses as much as digits as its factorization.

434736649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 46.

The square root of 434736649 is about 20850.3393017955. The cubic root of 434736649 is about 757.5455495852.

The spelling of 434736649 in words is "four hundred thirty-four million, seven hundred thirty-six thousand, six hundred forty-nine".