276011993 has 4 divisors (see below), whose sum is σ = 290538960. Its totient is φ = 261485028.

The previous prime is 276011987. The next prime is 276012001. The reversal of 276011993 is 399110672.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 276011993 - 2⁶ = 276011929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (276011903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7263455 + ... + 7263492.

It is an arithmetic number, because the mean of its divisors is an integer number (72634740).

Almost surely, 2^276011993 is an apocalyptic number.

It is an amenable number.

276011993 is a deficient number, since it is larger than the sum of its proper divisors (14526967).

276011993 is a wasteful number, since it uses less digits than its factorization.

276011993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14526966.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 276011993 is about 16613.6086687992. The cubic root of 276011993 is about 651.0924374973.

The spelling of 276011993 in words is "two hundred seventy-six million, eleven thousand, nine hundred ninety-three".