401380087 has 2 divisors, whose sum is σ = 401380088. Its totient is φ = 401380086.

The previous prime is 401380079. The next prime is 401380099. The reversal of 401380087 is 780083104.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401380087 - 2³ = 401380079 is a prime.

It is a super-2 number, since 2×401380087² = 322211948480255138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401380687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200690043 + 200690044.

It is an arithmetic number, because the mean of its divisors is an integer number (200690044).

Almost surely, 2^401380087 is an apocalyptic number.

401380087 is a deficient number, since it is larger than the sum of its proper divisors (1).

401380087 is an equidigital number, since it uses as much as digits as its factorization.

401380087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 401380087 is about 20034.4724662268. The cubic root of 401380087 is about 737.6527077057.

It can be divided in two parts, 4013 and 80087, that added together give a square (84100 = 290²).

The spelling of 401380087 in words is "four hundred one million, three hundred eighty thousand, eighty-seven".