380699978 has 8 divisors (see below), whose sum is σ = 580728960. Its totient is φ = 187123660.

The previous prime is 380699971. The next prime is 380699999. The reversal of 380699978 is 879996083.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (380699971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1613018 + ... + 1613253.

It is an arithmetic number, because the mean of its divisors is an integer number (72591120).

Almost surely, 2^380699978 is an apocalyptic number.

380699978 is a deficient number, since it is larger than the sum of its proper divisors (200028982).

380699978 is a wasteful number, since it uses less digits than its factorization.

380699978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3226332.

The product of its (nonzero) digits is 5878656, while the sum is 59.

The square root of 380699978 is about 19511.5344860418. The cubic root of 380699978 is about 724.7601127873.

The spelling of 380699978 in words is "three hundred eighty million, six hundred ninety-nine thousand, nine hundred seventy-eight".