39780894 has 16 divisors (see below), whose sum is σ = 81255168. Its totient is φ = 12978072.

The previous prime is 39780893. The next prime is 39780911. The reversal of 39780894 is 49808793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39780893) 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, 70252 + ... + 70815.

It is an arithmetic number, because the mean of its divisors is an integer number (5078448).

Almost surely, 2^39780894 is an apocalyptic number.

39780894 is an abundant number, since it is smaller than the sum of its proper divisors (41474274).

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

39780894 is a wasteful number, since it uses less digits than its factorization.

39780894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141119.

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 39780894 is about 6307.2096841630. The cubic root of 39780894 is about 341.3696023760.

The spelling of 39780894 in words is "thirty-nine million, seven hundred eighty thousand, eight hundred ninety-four".