77441401 has 4 divisors (see below), whose sum is σ = 77494900. Its totient is φ = 77387904.

The previous prime is 77441389. The next prime is 77441411. The reversal of 77441401 is 10414477.

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

It can be written as a sum of positive squares in 2 ways, for example, as 55115776 + 22325625 = 7424^2 + 4725^2 .

It is a cyclic number.

It is not a de Polignac number, because 77441401 - 2⁵ = 77441369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77441401.

It is not an unprimeable number, because it can be changed into a prime (77441411) 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, 24516 + ... + 27493.

It is an arithmetic number, because the mean of its divisors is an integer number (19373725).

Almost surely, 2^77441401 is an apocalyptic number.

It is an amenable number.

77441401 is a deficient number, since it is larger than the sum of its proper divisors (53499).

77441401 is a wasteful number, since it uses less digits than its factorization.

77441401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53498.

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 77441401 is about 8800.0796019127. The cubic root of 77441401 is about 426.2434651263.

Adding to 77441401 its reverse (10414477), we get a palindrome (87855878).

The spelling of 77441401 in words is "seventy-seven million, four hundred forty-one thousand, four hundred one".