377047421 has 2 divisors, whose sum is σ = 377047422. Its totient is φ = 377047420.

The previous prime is 377047399. The next prime is 377047469. The reversal of 377047421 is 124740773.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 355322500 + 21724921 = 18850^2 + 4661^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-377047421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (377047721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 188523710 + 188523711.

It is an arithmetic number, because the mean of its divisors is an integer number (188523711).

Almost surely, 2^377047421 is an apocalyptic number.

It is an amenable number.

377047421 is a deficient number, since it is larger than the sum of its proper divisors (1).

377047421 is an equidigital number, since it uses as much as digits as its factorization.

377047421 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 377047421 is about 19417.7089534270. The cubic root of 377047421 is about 722.4348003728.

The spelling of 377047421 in words is "three hundred seventy-seven million, forty-seven thousand, four hundred twenty-one".