76444121 has 16 divisors (see below), whose sum is σ = 87671808. Its totient is φ = 66028800.

The previous prime is 76444097. The next prime is 76444141. The reversal of 76444121 is 12144467.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76444121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (76444141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41306 + ... + 43116.

It is an arithmetic number, because the mean of its divisors is an integer number (5479488).

Almost surely, 2^76444121 is an apocalyptic number.

It is an amenable number.

76444121 is a deficient number, since it is larger than the sum of its proper divisors (11227687).

76444121 is a wasteful number, since it uses less digits than its factorization.

76444121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032.

The product of its digits is 5376, while the sum is 29.

The square root of 76444121 is about 8743.2328689107. The cubic root of 76444121 is about 424.4058521242.

Adding to 76444121 its reverse (12144467), we get a palindrome (88588588).

The spelling of 76444121 in words is "seventy-six million, four hundred forty-four thousand, one hundred twenty-one".