64441394 has 4 divisors (see below), whose sum is σ = 96662094. Its totient is φ = 32220696.

The previous prime is 64441387. The next prime is 64441411. The reversal of 64441394 is 49314446.

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., 32913169 + 31528225 = 5737^2 + 5615^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16110347 + ... + 16110350.

Almost surely, 2^64441394 is an apocalyptic number.

64441394 is a deficient number, since it is larger than the sum of its proper divisors (32220700).

64441394 is a wasteful number, since it uses less digits than its factorization.

64441394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32220699.

The product of its digits is 41472, while the sum is 35.

The square root of 64441394 is about 8027.5397227295. The cubic root of 64441394 is about 400.9174648700.

The spelling of 64441394 in words is "sixty-four million, four hundred forty-one thousand, three hundred ninety-four".