787877494 has 4 divisors (see below), whose sum is σ = 1181816244. Its totient is φ = 393938746.

The previous prime is 787877491. The next prime is 787877543. The reversal of 787877494 is 494778787.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 494778787 = 149 ⋅3320663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (787877491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196969372 + ... + 196969375.

It is an arithmetic number, because the mean of its divisors is an integer number (295454061).

Almost surely, 2^787877494 is an apocalyptic number.

787877494 is a deficient number, since it is larger than the sum of its proper divisors (393938750).

787877494 is a wasteful number, since it uses less digits than its factorization.

787877494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393938749.

The product of its digits is 22127616, while the sum is 61.

The square root of 787877494 is about 28069.1555626456. The cubic root of 787877494 is about 923.6049070470.

The spelling of 787877494 in words is "seven hundred eighty-seven million, eight hundred seventy-seven thousand, four hundred ninety-four".