40387601 has 2 divisors, whose sum is σ = 40387602. Its totient is φ = 40387600.

The previous prime is 40387573. The next prime is 40387649. The reversal of 40387601 is 10678304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38427601 + 1960000 = 6199^2 + 1400^2 .

It is a cyclic number.

It is not a de Polignac number, because 40387601 - 2¹⁴ = 40371217 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (40380601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20193800 + 20193801.

It is an arithmetic number, because the mean of its divisors is an integer number (20193801).

Almost surely, 2^40387601 is an apocalyptic number.

It is an amenable number.

40387601 is a deficient number, since it is larger than the sum of its proper divisors (1).

40387601 is an equidigital number, since it uses as much as digits as its factorization.

40387601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 40387601 is about 6355.1239956432. The cubic root of 40387601 is about 343.0962877115.

The spelling of 40387601 in words is "forty million, three hundred eighty-seven thousand, six hundred one".