401740549 has 16 divisors (see below), whose sum is σ = 489259008. Its totient is φ = 322013952.

The previous prime is 401740523. The next prime is 401740553. The reversal of 401740549 is 945047104.

It is a cyclic number.

It is not a de Polignac number, because 401740549 - 2⁷ = 401740421 is a prime.

It is a super-2 number, since 2×401740549² = 322790937421642802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401740519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7932 + ... + 29434.

It is an arithmetic number, because the mean of its divisors is an integer number (30578688).

Almost surely, 2^401740549 is an apocalyptic number.

It is an amenable number.

401740549 is a deficient number, since it is larger than the sum of its proper divisors (87518459).

401740549 is a wasteful number, since it uses less digits than its factorization.

401740549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21684.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 401740549 is about 20043.4664916027. The cubic root of 401740549 is about 737.8734595751.

The spelling of 401740549 in words is "four hundred one million, seven hundred forty thousand, five hundred forty-nine".