263948994 has 12 divisors (see below), whose sum is σ = 571889526. Its totient is φ = 87982992.

The previous prime is 263948977. The next prime is 263949001. The reversal of 263948994 is 499849362.

It can be written as a sum of positive squares in only one way, i.e., 257121225 + 6827769 = 16035^2 + 2613^2 .

It is a super-2 number, since 2×263948994² = 139338142867224072, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 263948994.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7331899 + ... + 7331934.

Almost surely, 2^263948994 is an apocalyptic number.

263948994 is an abundant number, since it is smaller than the sum of its proper divisors (307940532).

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

263948994 is a wasteful number, since it uses less digits than its factorization.

263948994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14663841 (or 14663838 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 54.

The square root of 263948994 is about 16246.5071323039. The cubic root of 263948994 is about 641.4655493240.

The spelling of 263948994 in words is "two hundred sixty-three million, nine hundred forty-eight thousand, nine hundred ninety-four".