76920449 has 4 divisors (see below), whose sum is σ = 77507760. Its totient is φ = 76333140.

The previous prime is 76920443. The next prime is 76920463. The reversal of 76920449 is 94402967.

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, and also an emirpimes, since its reverse is a distinct semiprime: 94402967 = 31 ⋅3045257.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76920449 is a prime.

It is a super-3 number, since 3×76920449³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (76920443) 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, 293459 + ... + 293720.

It is an arithmetic number, because the mean of its divisors is an integer number (19376940).

Almost surely, 2^76920449 is an apocalyptic number.

It is an amenable number.

76920449 is a deficient number, since it is larger than the sum of its proper divisors (587311).

76920449 is a wasteful number, since it uses less digits than its factorization.

76920449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587310.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 76920449 is about 8770.4303771252. The cubic root of 76920449 is about 425.2855271629.

The spelling of 76920449 in words is "seventy-six million, nine hundred twenty thousand, four hundred forty-nine".