393345429 has 32 divisors (see below), whose sum is σ = 561755520. Its totient is φ = 244113408.

The previous prime is 393345377. The next prime is 393345437. The reversal of 393345429 is 924543393.

It is not a de Polignac number, because 393345429 - 2⁷ = 393345301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393365429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1114117 + ... + 1114469.

It is an arithmetic number, because the mean of its divisors is an integer number (17554860).

Almost surely, 2^393345429 is an apocalyptic number.

It is an amenable number.

393345429 is a deficient number, since it is larger than the sum of its proper divisors (168410091).

393345429 is a wasteful number, since it uses less digits than its factorization.

393345429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661.

The product of its digits is 349920, while the sum is 42.

The square root of 393345429 is about 19832.9379820540. The cubic root of 393345429 is about 732.6974879375.

The spelling of 393345429 in words is "three hundred ninety-three million, three hundred forty-five thousand, four hundred twenty-nine".