378979290 has 32 divisors (see below), whose sum is σ = 1010612160. Its totient is φ = 101061072.

The previous prime is 378979273. The next prime is 378979297. The reversal of 378979290 is 92979873.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (378979297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 701544 + ... + 702083.

It is an arithmetic number, because the mean of its divisors is an integer number (31581630).

Almost surely, 2^378979290 is an apocalyptic number.

378979290 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

378979290 is an abundant number, since it is smaller than the sum of its proper divisors (631632870).

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

378979290 is a wasteful number, since it uses less digits than its factorization.

378979290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403643 (or 1403637 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 54.

The square root of 378979290 is about 19467.3904260432. The cubic root of 378979290 is about 723.6665398136. Note that the first 3 decimals are identical.

The spelling of 378979290 in words is "three hundred seventy-eight million, nine hundred seventy-nine thousand, two hundred ninety".