380121639 has 8 divisors (see below), whose sum is σ = 507536640. Its totient is φ = 253060536.

The previous prime is 380121629. The next prime is 380121653. The reversal of 380121639 is 936121083.

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

It is not a de Polignac number, because 380121639 - 2¹¹ = 380119591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380121629) 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, 85957 + ... + 90270.

It is an arithmetic number, because the mean of its divisors is an integer number (63442080).

Almost surely, 2^380121639 is an apocalyptic number.

380121639 is a deficient number, since it is larger than the sum of its proper divisors (127415001).

380121639 is a wasteful number, since it uses less digits than its factorization.

380121639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176949.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 380121639 is about 19496.7084144991. The cubic root of 380121639 is about 724.3929212139.

The spelling of 380121639 in words is "three hundred eighty million, one hundred twenty-one thousand, six hundred thirty-nine".