76409743 has 4 divisors (see below), whose sum is σ = 76743640. Its totient is φ = 76075848.

The previous prime is 76409737. The next prime is 76409771. The reversal of 76409743 is 34790467.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34790467 = 23 ⋅1512629.

It is a cyclic number.

It is not a de Polignac number, because 76409743 - 2²⁵ = 42855311 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 76409696 and 76409705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76409143) 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, 166605 + ... + 167062.

It is an arithmetic number, because the mean of its divisors is an integer number (19185910).

Almost surely, 2^76409743 is an apocalyptic number.

76409743 is a deficient number, since it is larger than the sum of its proper divisors (333897).

76409743 is a wasteful number, since it uses less digits than its factorization.

76409743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333896.

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 76409743 is about 8741.2666702258. The cubic root of 76409743 is about 424.3422221512.

It can be divided in two parts, 7640974 and 3, that multiplied together give a palindrome (22922922).

The spelling of 76409743 in words is "seventy-six million, four hundred nine thousand, seven hundred forty-three".