1393404423 has 16 divisors (see below), whose sum is σ = 1991049216. Its totient is φ = 864531360.

The previous prime is 1393404421. The next prime is 1393404451. The reversal of 1393404423 is 3244043931.

It is not a de Polignac number, because 1393404423 - 2¹ = 1393404421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1393404421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270343 + ... + 275448.

It is an arithmetic number, because the mean of its divisors is an integer number (124440576).

Almost surely, 2^1393404423 is an apocalyptic number.

1393404423 is a deficient number, since it is larger than the sum of its proper divisors (597644793).

1393404423 is a wasteful number, since it uses less digits than its factorization.

1393404423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545854.

The product of its (nonzero) digits is 31104, while the sum is 33.

The square root of 1393404423 is about 37328.3327112262. The cubic root of 1393404423 is about 1116.9294143825.

The spelling of 1393404423 in words is "one billion, three hundred ninety-three million, four hundred four thousand, four hundred twenty-three".