401820359 has 4 divisors (see below), whose sum is σ = 408407640. Its totient is φ = 395233080.

The previous prime is 401820329. The next prime is 401820371. The reversal of 401820359 is 953028104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401820359 is a prime.

It is a super-2 number, since 2×401820359² = 322919201813777762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401820329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3293549 + ... + 3293670.

It is an arithmetic number, because the mean of its divisors is an integer number (102101910).

Almost surely, 2^401820359 is an apocalyptic number.

401820359 is a deficient number, since it is larger than the sum of its proper divisors (6587281).

401820359 is an equidigital number, since it uses as much as digits as its factorization.

401820359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6587280.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 401820359 is about 20045.4573158110. The cubic root of 401820359 is about 737.9223184565.

The spelling of 401820359 in words is "four hundred one million, eight hundred twenty thousand, three hundred fifty-nine".