76400477 has 2 divisors, whose sum is σ = 76400478. Its totient is φ = 76400476.

The previous prime is 76400459. The next prime is 76400509. The reversal of 76400477 is 77400467.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73376356 + 3024121 = 8566^2 + 1739^2 .

It is an emirp because it is prime and its reverse (77400467) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76400477 - 2¹² = 76396381 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76400407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38200238 + 38200239.

It is an arithmetic number, because the mean of its divisors is an integer number (38200239).

Almost surely, 2^76400477 is an apocalyptic number.

It is an amenable number.

76400477 is a deficient number, since it is larger than the sum of its proper divisors (1).

76400477 is an equidigital number, since it uses as much as digits as its factorization.

76400477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32928, while the sum is 35.

The square root of 76400477 is about 8740.7366394372. The cubic root of 76400477 is about 424.3250685186.

The spelling of 76400477 in words is "seventy-six million, four hundred thousand, four hundred seventy-seven".