380929966 has 4 divisors (see below), whose sum is σ = 571394952. Its totient is φ = 190464982.

The previous prime is 380929963. The next prime is 380930003. The reversal of 380929966 is 669929083.

It is a happy number.

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

It is a super-2 number, since 2×380929966² = 290215277993522312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380929963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95232490 + ... + 95232493.

It is an arithmetic number, because the mean of its divisors is an integer number (142848738).

Almost surely, 2^380929966 is an apocalyptic number.

380929966 is a deficient number, since it is larger than the sum of its proper divisors (190464986).

380929966 is a wasteful number, since it uses less digits than its factorization.

380929966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190464985.

The product of its (nonzero) digits is 1259712, while the sum is 52.

The square root of 380929966 is about 19517.4272382402. The cubic root of 380929966 is about 724.9060304685.

The spelling of 380929966 in words is "three hundred eighty million, nine hundred twenty-nine thousand, nine hundred sixty-six".