376440397 has 4 divisors (see below), whose sum is σ = 383543100. Its totient is φ = 369337696.

The previous prime is 376440391. The next prime is 376440431. The reversal of 376440397 is 793044673.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 793044673 = 41 ⋅19342553.

It can be written as a sum of positive squares in 2 ways, for example, as 142778601 + 233661796 = 11949^2 + 15286^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-376440397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (376440391) 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, 3551272 + ... + 3551377.

It is an arithmetic number, because the mean of its divisors is an integer number (95885775).

Almost surely, 2^376440397 is an apocalyptic number.

It is an amenable number.

376440397 is a deficient number, since it is larger than the sum of its proper divisors (7102703).

376440397 is an equidigital number, since it uses as much as digits as its factorization.

376440397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7102702.

The product of its (nonzero) digits is 381024, while the sum is 43.

The square root of 376440397 is about 19402.0719769823. The cubic root of 376440397 is about 722.0468997294.

The spelling of 376440397 in words is "three hundred seventy-six million, four hundred forty thousand, three hundred ninety-seven".