394153469 has 2 divisors, whose sum is σ = 394153470. Its totient is φ = 394153468.

The previous prime is 394153457. The next prime is 394153481. The reversal of 394153469 is 964351493.

It is a balanced prime because it is at equal distance from previous prime (394153457) and next prime (394153481).

It can be written as a sum of positive squares in only one way, i.e., 251064025 + 143089444 = 15845^2 + 11962^2 .

It is a cyclic number.

It is not a de Polignac number, because 394153469 - 2¹⁶ = 394087933 is a prime.

It is a super-2 number, since 2×394153469² = 310713914249467922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394155469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197076734 + 197076735.

It is an arithmetic number, because the mean of its divisors is an integer number (197076735).

Almost surely, 2^394153469 is an apocalyptic number.

It is an amenable number.

394153469 is a deficient number, since it is larger than the sum of its proper divisors (1).

394153469 is an equidigital number, since it uses as much as digits as its factorization.

394153469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 44.

The square root of 394153469 is about 19853.2986931643. The cubic root of 394153469 is about 733.1988656800.

The spelling of 394153469 in words is "three hundred ninety-four million, one hundred fifty-three thousand, four hundred sixty-nine".