390133433 has 8 divisors (see below), whose sum is σ = 404531400. Its totient is φ = 375798528.

The previous prime is 390133423. The next prime is 390133483. The reversal of 390133433 is 334331093.

It can be written as a sum of positive squares in 4 ways, for example, as 17952169 + 372181264 = 4237^2 + 19292^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 390133433 - 2¹⁰ = 390132409 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 390133396 and 390133405.

It is not an unprimeable number, because it can be changed into a prime (390133423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2978 + ... + 28091.

It is an arithmetic number, because the mean of its divisors is an integer number (50566425).

Almost surely, 2^390133433 is an apocalyptic number.

It is an amenable number.

390133433 is a deficient number, since it is larger than the sum of its proper divisors (14397967).

390133433 is a wasteful number, since it uses less digits than its factorization.

390133433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31531.

The product of its (nonzero) digits is 8748, while the sum is 29.

The square root of 390133433 is about 19751.7956905189. The cubic root of 390133433 is about 730.6976710384.

The spelling of 390133433 in words is "three hundred ninety million, one hundred thirty-three thousand, four hundred thirty-three".