76909901 has 4 divisors (see below), whose sum is σ = 77078652. Its totient is φ = 76741152.

The previous prime is 76909883. The next prime is 76909909. The reversal of 76909901 is 10990967.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10990967 = 13 ⋅845459.

It can be written as a sum of positive squares in 2 ways, for example, as 46648900 + 30261001 = 6830^2 + 5501^2 .

It is a cyclic number.

It is not a de Polignac number, because 76909901 - 2¹⁰ = 76908877 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 (76909909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83690 + ... + 84603.

It is an arithmetic number, because the mean of its divisors is an integer number (19269663).

Almost surely, 2^76909901 is an apocalyptic number.

It is an amenable number.

76909901 is a deficient number, since it is larger than the sum of its proper divisors (168751).

76909901 is a wasteful number, since it uses less digits than its factorization.

76909901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168750.

The product of its (nonzero) digits is 30618, while the sum is 41.

The square root of 76909901 is about 8769.8290177175. The cubic root of 76909901 is about 425.2660866592.

The spelling of 76909901 in words is "seventy-six million, nine hundred nine thousand, nine hundred one".