787954 has 4 divisors (see below), whose sum is σ = 1181934. Its totient is φ = 393976.

The previous prime is 787939. The next prime is 787973. The reversal of 787954 is 459787.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 459787 = 59 ⋅7793.

It can be written as a sum of positive squares in only one way, i.e., 522729 + 265225 = 723^2 + 515^2 .

It is a super-2 number, since 2×787954² = 1241743012232, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196987 + ... + 196990.

2⁷⁸⁷⁹⁵⁴ is an apocalyptic number.

787954 is a deficient number, since it is larger than the sum of its proper divisors (393980).

787954 is a wasteful number, since it uses less digits than its factorization.

787954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393979.

The product of its digits is 70560, while the sum is 40.

The square root of 787954 is about 887.6677306290. The cubic root of 787954 is about 92.3634801301.

The spelling of 787954 in words is "seven hundred eighty-seven thousand, nine hundred fifty-four".