890954609 has 2 divisors, whose sum is σ = 890954610. Its totient is φ = 890954608.

The previous prime is 890954599. The next prime is 890954621. The reversal of 890954609 is 906459098.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 858783025 + 32171584 = 29305^2 + 5672^2 .

It is a cyclic number.

It is not a de Polignac number, because 890954609 - 2¹⁶ = 890889073 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (890954639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445477304 + 445477305.

It is an arithmetic number, because the mean of its divisors is an integer number (445477305).

Almost surely, 2^890954609 is an apocalyptic number.

It is an amenable number.

890954609 is a deficient number, since it is larger than the sum of its proper divisors (1).

890954609 is an equidigital number, since it uses as much as digits as its factorization.

890954609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 699840, while the sum is 50.

The square root of 890954609 is about 29848.8627756570. The cubic root of 890954609 is about 962.2439582958.

The spelling of 890954609 in words is "eight hundred ninety million, nine hundred fifty-four thousand, six hundred nine".