40398377 has 2 divisors, whose sum is σ = 40398378. Its totient is φ = 40398376.

The previous prime is 40398353. The next prime is 40398383. The reversal of 40398377 is 77389304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40208281 + 190096 = 6341^2 + 436^2 .

It is a cyclic number.

It is not a de Polignac number, because 40398377 - 2⁸ = 40398121 is a prime.

It is not a weakly prime, because it can be changed into another prime (40398317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20199188 + 20199189.

It is an arithmetic number, because the mean of its divisors is an integer number (20199189).

Almost surely, 2^40398377 is an apocalyptic number.

It is an amenable number.

40398377 is a deficient number, since it is larger than the sum of its proper divisors (1).

40398377 is an equidigital number, since it uses as much as digits as its factorization.

40398377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 40398377 is about 6355.9717589052. The cubic root of 40398377 is about 343.1267993597.

The spelling of 40398377 in words is "forty million, three hundred ninety-eight thousand, three hundred seventy-seven".