1023739394 has 8 divisors (see below), whose sum is σ = 1535764860. Its totient is φ = 511817776.

The previous prime is 1023739391. The next prime is 1023739427. The reversal of 1023739394 is 4939373201.

It can be written as a sum of positive squares in 2 ways, for example, as 722265625 + 301473769 = 26875^2 + 17363^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1023739391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7112 + ... + 45804.

Almost surely, 2^1023739394 is an apocalyptic number.

1023739394 is a deficient number, since it is larger than the sum of its proper divisors (512025466).

1023739394 is a wasteful number, since it uses less digits than its factorization.

1023739394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51924.

The product of its (nonzero) digits is 122472, while the sum is 41.

The square root of 1023739394 is about 31995.9277721400. The cubic root of 1023739394 is about 1007.8513266755.

The spelling of 1023739394 in words is "one billion, twenty-three million, seven hundred thirty-nine thousand, three hundred ninety-four".