401685445 has 16 divisors (see below), whose sum is σ = 568654848. Its totient is φ = 266555520.

The previous prime is 401685437. The next prime is 401685451. The reversal of 401685445 is 544586104.

It is not a de Polignac number, because 401685445 - 2³ = 401685437 is a prime.

It is a super-2 number, since 2×401685445² = 322702393449696050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184024 + ... + 186193.

It is an arithmetic number, because the mean of its divisors is an integer number (35540928).

Almost surely, 2^401685445 is an apocalyptic number.

It is an amenable number.

401685445 is a deficient number, since it is larger than the sum of its proper divisors (166969403).

401685445 is a wasteful number, since it uses less digits than its factorization.

401685445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370260.

The product of its (nonzero) digits is 76800, while the sum is 37.

The square root of 401685445 is about 20042.0918319421. The cubic root of 401685445 is about 737.8397216826.

The spelling of 401685445 in words is "four hundred one million, six hundred eighty-five thousand, four hundred forty-five".