377921449 has 2 divisors, whose sum is σ = 377921450. Its totient is φ = 377921448.

The previous prime is 377921443. The next prime is 377921459. The reversal of 377921449 is 944129773.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 226803600 + 151117849 = 15060^2 + 12293^2 .

It is an emirp because it is prime and its reverse (944129773) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 377921449 - 2¹³ = 377913257 is a prime.

It is a super-2 number, since 2×377921449² = 285649243228519202, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 377921399 and 377921408.

It is not a weakly prime, because it can be changed into another prime (377921443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 188960724 + 188960725.

It is an arithmetic number, because the mean of its divisors is an integer number (188960725).

Almost surely, 2^377921449 is an apocalyptic number.

It is an amenable number.

377921449 is a deficient number, since it is larger than the sum of its proper divisors (1).

377921449 is an equidigital number, since it uses as much as digits as its factorization.

377921449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 46.

The square root of 377921449 is about 19440.2018765238. The cubic root of 377921449 is about 722.9925913689.

The spelling of 377921449 in words is "three hundred seventy-seven million, nine hundred twenty-one thousand, four hundred forty-nine".