76838407 has 4 divisors (see below), whose sum is σ = 76862520. Its totient is φ = 76814296.

The previous prime is 76838383. The next prime is 76838449. The reversal of 76838407 is 70483867.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76838407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76838497) 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, 6388 + ... + 13945.

It is an arithmetic number, because the mean of its divisors is an integer number (19215630).

Almost surely, 2^76838407 is an apocalyptic number.

76838407 is a deficient number, since it is larger than the sum of its proper divisors (24113).

76838407 is a wasteful number, since it uses less digits than its factorization.

76838407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24112.

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 76838407 is about 8765.7519358011. The cubic root of 76838407 is about 425.1342726836.

The spelling of 76838407 in words is "seventy-six million, eight hundred thirty-eight thousand, four hundred seven".