390269269 has 8 divisors (see below), whose sum is σ = 434783160. Its totient is φ = 347825856.

The previous prime is 390269249. The next prime is 390269273. The reversal of 390269269 is 962962093.

It can be written as a sum of positive squares in 4 ways, for example, as 46648900 + 343620369 = 6830^2 + 18537^2 .

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 390269269 - 2¹⁹ = 389744981 is a prime.

It is a super-2 number, since 2×390269269² = 304620204651588722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390269249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 517222 + ... + 517975.

It is an arithmetic number, because the mean of its divisors is an integer number (54347895).

Almost surely, 2^390269269 is an apocalyptic number.

It is an amenable number.

390269269 is a deficient number, since it is larger than the sum of its proper divisors (44513891).

390269269 is a wasteful number, since it uses less digits than its factorization.

390269269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035239.

The product of its (nonzero) digits is 314928, while the sum is 46.

The square root of 390269269 is about 19755.2339646991. The cubic root of 390269269 is about 730.7824655584.

The spelling of 390269269 in words is "three hundred ninety million, two hundred sixty-nine thousand, two hundred sixty-nine".