49894409 has 2 divisors, whose sum is σ = 49894410. Its totient is φ = 49894408.

The previous prime is 49894393. The next prime is 49894433. The reversal of 49894409 is 90449894.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40284409 + 9610000 = 6347^2 + 3100^2 .

It is a cyclic number.

It is not a de Polignac number, because 49894409 - 2⁴ = 49894393 is a prime.

It is not a weakly prime, because it can be changed into another prime (49894459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24947204 + 24947205.

It is an arithmetic number, because the mean of its divisors is an integer number (24947205).

Almost surely, 2^49894409 is an apocalyptic number.

It is an amenable number.

49894409 is a deficient number, since it is larger than the sum of its proper divisors (1).

49894409 is an equidigital number, since it uses as much as digits as its factorization.

49894409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 49894409 is about 7063.5974545553. The cubic root of 49894409 is about 368.1436333809.

The spelling of 49894409 in words is "forty-nine million, eight hundred ninety-four thousand, four hundred nine".