376916921 has 2 divisors, whose sum is σ = 376916922. Its totient is φ = 376916920.

The previous prime is 376916909. The next prime is 376916933. The reversal of 376916921 is 129619673.

It is a balanced prime because it is at equal distance from previous prime (376916909) and next prime (376916933).

It can be written as a sum of positive squares in only one way, i.e., 334158400 + 42758521 = 18280^2 + 6539^2 .

It is a cyclic number.

It is not a de Polignac number, because 376916921 - 2¹⁰ = 376915897 is a prime.

It is a super-2 number, since 2×376916921² = 284132730672240482, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (376915921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 188458460 + 188458461.

It is an arithmetic number, because the mean of its divisors is an integer number (188458461).

Almost surely, 2^376916921 is an apocalyptic number.

It is an amenable number.

376916921 is a deficient number, since it is larger than the sum of its proper divisors (1).

376916921 is an equidigital number, since it uses as much as digits as its factorization.

376916921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 44.

The square root of 376916921 is about 19414.3483279764. The cubic root of 376916921 is about 722.3514433774.

The spelling of 376916921 in words is "three hundred seventy-six million, nine hundred sixteen thousand, nine hundred twenty-one".