1234455394 has 4 divisors (see below), whose sum is σ = 1851683094. Its totient is φ = 617227696.

The previous prime is 1234455359. The next prime is 1234455401. The reversal of 1234455394 is 4935544321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4935544321 = 37997 ⋅129893.

It can be written as a sum of positive squares in only one way, i.e., 1164515625 + 69939769 = 34125^2 + 8363^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308613847 + ... + 308613850.

Almost surely, 2^1234455394 is an apocalyptic number.

1234455394 is a deficient number, since it is larger than the sum of its proper divisors (617227700).

1234455394 is an equidigital number, since it uses as much as digits as its factorization.

1234455394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617227699.

The product of its digits is 259200, while the sum is 40.

The square root of 1234455394 is about 35134.8174038232. The cubic root of 1234455394 is about 1072.7333945430.

The spelling of 1234455394 in words is "one billion, two hundred thirty-four million, four hundred fifty-five thousand, three hundred ninety-four".