401620519 has 2 divisors, whose sum is σ = 401620520. Its totient is φ = 401620518.

The previous prime is 401620511. The next prime is 401620573. The reversal of 401620519 is 915026104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401620519 - 2³ = 401620511 is a prime.

It is a super-2 number, since 2×401620519² = 322598082563658722, which contains 22 as substring.

It is a Chen prime.

It is equal to p_21417940 and since 401620519 and 21417940 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401620511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200810259 + 200810260.

It is an arithmetic number, because the mean of its divisors is an integer number (200810260).

Almost surely, 2^401620519 is an apocalyptic number.

401620519 is a deficient number, since it is larger than the sum of its proper divisors (1).

401620519 is an equidigital number, since it uses as much as digits as its factorization.

401620519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 401620519 is about 20040.4720253790. The cubic root of 401620519 is about 737.7999662275.

The spelling of 401620519 in words is "four hundred one million, six hundred twenty thousand, five hundred nineteen".