401440153 has 2 divisors, whose sum is σ = 401440154. Its totient is φ = 401440152.

The previous prime is 401440147. The next prime is 401440157. The reversal of 401440153 is 351044104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 309337744 + 92102409 = 17588^2 + 9597^2 .

It is a cyclic number.

It is not a de Polignac number, because 401440153 - 2¹⁷ = 401309081 is a prime.

It is a super-2 number, since 2×401440153² = 322308392881326818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (401440157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200720076 + 200720077.

It is an arithmetic number, because the mean of its divisors is an integer number (200720077).

Almost surely, 2^401440153 is an apocalyptic number.

It is an amenable number.

401440153 is a deficient number, since it is larger than the sum of its proper divisors (1).

401440153 is an equidigital number, since it uses as much as digits as its factorization.

401440153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 401440153 is about 20035.9714763223. The cubic root of 401440153 is about 737.6895021216.

Adding to 401440153 its reverse (351044104), we get a palindrome (752484257).

The spelling of 401440153 in words is "four hundred one million, four hundred forty thousand, one hundred fifty-three".