39378886494 has 64 divisors (see below), whose sum is σ = 81757589760. Its totient is φ = 12636288000.

The previous prime is 39378886489. The next prime is 39378886499. The reversal of 39378886494 is 49468887393.

It is an interprime number because it is at equal distance from previous prime (39378886489) and next prime (39378886499).

It is a super-2 number, since 2×39378886494² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39378886499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6278392 + ... + 6284660.

It is an arithmetic number, because the mean of its divisors is an integer number (1277462340).

Almost surely, 2^39378886494 is an apocalyptic number.

39378886494 is an abundant number, since it is smaller than the sum of its proper divisors (42378703266).

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

39378886494 is a wasteful number, since it uses less digits than its factorization.

39378886494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6665.

The product of its digits is 250822656, while the sum is 69.

The spelling of 39378886494 in words is "thirty-nine billion, three hundred seventy-eight million, eight hundred eighty-six thousand, four hundred ninety-four".