380629885 has 4 divisors (see below), whose sum is σ = 456755868. Its totient is φ = 304503904.

The previous prime is 380629877. The next prime is 380629891. The reversal of 380629885 is 588926083.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48734361 + 331895524 = 6981^2 + 18218^2 .

It is a cyclic number.

It is not a de Polignac number, because 380629885 - 2³ = 380629877 is a prime.

It is a super-2 number, since 2×380629885² = 289758218710226450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38062984 + ... + 38062993.

It is an arithmetic number, because the mean of its divisors is an integer number (114188967).

Almost surely, 2^380629885 is an apocalyptic number.

It is an amenable number.

380629885 is a deficient number, since it is larger than the sum of its proper divisors (76125983).

380629885 is an equidigital number, since it uses as much as digits as its factorization.

380629885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76125982.

The product of its (nonzero) digits is 829440, while the sum is 49.

The square root of 380629885 is about 19509.7382094174. The cubic root of 380629885 is about 724.7156300524.

The spelling of 380629885 in words is "three hundred eighty million, six hundred twenty-nine thousand, eight hundred eighty-five".