389403212 has 12 divisors (see below), whose sum is σ = 743406216. Its totient is φ = 177001440.

The previous prime is 389403211. The next prime is 389403253. The reversal of 389403212 is 212304983.

It is a happy number.

It is a super-4 number, since 4×389403212⁴ (a number of 35 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (389403211) 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, 4424993 + ... + 4425080.

It is an arithmetic number, because the mean of its divisors is an integer number (61950518).

Almost surely, 2^389403212 is an apocalyptic number.

It is an amenable number.

389403212 is a deficient number, since it is larger than the sum of its proper divisors (354003004).

389403212 is a wasteful number, since it uses less digits than its factorization.

389403212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8850088 (or 8850086 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 389403212 is about 19733.3021058311. The cubic root of 389403212 is about 730.2414988812.

The spelling of 389403212 in words is "three hundred eighty-nine million, four hundred three thousand, two hundred twelve".