390052869 has 4 divisors (see below), whose sum is σ = 520070496. Its totient is φ = 260035244.

The previous prime is 390052867. The next prime is 390052889. The reversal of 390052869 is 968250093.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 390052869 - 2¹ = 390052867 is a prime.

It is a super-2 number, since 2×390052869² = 304282481230262322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 390052869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390052867) 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 in 3 ways as a sum of consecutive naturals, for example, 65008809 + ... + 65008814.

It is an arithmetic number, because the mean of its divisors is an integer number (130017624).

Almost surely, 2^390052869 is an apocalyptic number.

It is an amenable number.

390052869 is a deficient number, since it is larger than the sum of its proper divisors (130017627).

390052869 is a wasteful number, since it uses less digits than its factorization.

390052869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130017626.

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 390052869 is about 19749.7561757101. The cubic root of 390052869 is about 730.6473703167.

The spelling of 390052869 in words is "three hundred ninety million, fifty-two thousand, eight hundred sixty-nine".