76969381 has 4 divisors (see below), whose sum is σ = 77479264. Its totient is φ = 76459500.

The previous prime is 76969379. The next prime is 76969391. The reversal of 76969381 is 18396967.

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 76969381 - 2¹ = 76969379 is a prime.

It is a super-2 number, since 2×76969381² = 11848571223046322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76969331) 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, 254715 + ... + 255016.

It is an arithmetic number, because the mean of its divisors is an integer number (19369816).

Almost surely, 2^76969381 is an apocalyptic number.

It is an amenable number.

76969381 is a deficient number, since it is larger than the sum of its proper divisors (509883).

76969381 is a wasteful number, since it uses less digits than its factorization.

76969381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509882.

The product of its digits is 489888, while the sum is 49.

The square root of 76969381 is about 8773.2195344697. The cubic root of 76969381 is about 425.3756881043.

The spelling of 76969381 in words is "seventy-six million, nine hundred sixty-nine thousand, three hundred eighty-one".