755431394 has 4 divisors (see below), whose sum is σ = 1133147094. Its totient is φ = 377715696.

The previous prime is 755431361. The next prime is 755431399. The reversal of 755431394 is 493134557.

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., 479040769 + 276390625 = 21887^2 + 16625^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (755431399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 188857847 + ... + 188857850.

Almost surely, 2^755431394 is an apocalyptic number.

755431394 is a deficient number, since it is larger than the sum of its proper divisors (377715700).

755431394 is a wasteful number, since it uses less digits than its factorization.

755431394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377715699.

The product of its digits is 226800, while the sum is 41.

The square root of 755431394 is about 27485.1122246208. The cubic root of 755431394 is about 910.7482450325.

The spelling of 755431394 in words is "seven hundred fifty-five million, four hundred thirty-one thousand, three hundred ninety-four".