53809394 has 4 divisors (see below), whose sum is σ = 80714094. Its totient is φ = 26904696.

The previous prime is 53809391. The next prime is 53809411. The reversal of 53809394 is 49390835.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 36060025 + 17749369 = 6005^2 + 4213^2 .

It is not an unprimeable number, because it can be changed into a prime (53809391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13452347 + ... + 13452350.

Almost surely, 2^53809394 is an apocalyptic number.

53809394 is a deficient number, since it is larger than the sum of its proper divisors (26904700).

53809394 is a wasteful number, since it uses less digits than its factorization.

53809394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26904699.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 53809394 is about 7335.4886681120. The cubic root of 53809394 is about 377.5310712258.

The spelling of 53809394 in words is "fifty-three million, eight hundred nine thousand, three hundred ninety-four".