380949558 has 64 divisors (see below), whose sum is σ = 858359808. Its totient is φ = 111697920.

The previous prime is 380949557. The next prime is 380949559. The reversal of 380949558 is 855949083.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (380949557) and next prime (380949559).

It is a self number, because there is not a number n which added to its sum of digits gives 380949558.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380949557) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 627291 + ... + 627897.

It is an arithmetic number, because the mean of its divisors is an integer number (13411872).

Almost surely, 2^380949558 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 380949558, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (429179904).

380949558 is an abundant number, since it is smaller than the sum of its proper divisors (477410250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

380949558 is a wasteful number, since it uses less digits than its factorization.

380949558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917.

The product of its (nonzero) digits is 1555200, while the sum is 51.

The square root of 380949558 is about 19517.9291422015. The cubic root of 380949558 is about 724.9184580507.

The spelling of 380949558 in words is "three hundred eighty million, nine hundred forty-nine thousand, five hundred fifty-eight".