378987405 has 8 divisors (see below), whose sum is σ = 606379872. Its totient is φ = 202126608.

The previous prime is 378987403. The next prime is 378987419. The reversal of 378987405 is 504789873.

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

It is not a de Polignac number, because 378987405 - 2¹ = 378987403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378987403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12632899 + ... + 12632928.

It is an arithmetic number, because the mean of its divisors is an integer number (75797484).

Almost surely, 2^378987405 is an apocalyptic number.

It is an amenable number.

378987405 is a deficient number, since it is larger than the sum of its proper divisors (227392467).

378987405 is a wasteful number, since it uses less digits than its factorization.

378987405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25265835.

The product of its (nonzero) digits is 1693440, while the sum is 51.

The square root of 378987405 is about 19467.5988503975. The cubic root of 378987405 is about 723.6717050141.

The spelling of 378987405 in words is "three hundred seventy-eight million, nine hundred eighty-seven thousand, four hundred five".