401971149 has 6 divisors (see below), whose sum is σ = 580625006. Its totient is φ = 267980760.

The previous prime is 401971147. The next prime is 401971153. The reversal of 401971149 is 941179104.

It can be written as a sum of positive squares in only one way, i.e., 227255625 + 174715524 = 15075^2 + 13218^2 .

It is not a de Polignac number, because 401971149 - 2¹ = 401971147 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401971147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22331722 + ... + 22331739.

Almost surely, 2^401971149 is an apocalyptic number.

It is an amenable number.

401971149 is a deficient number, since it is larger than the sum of its proper divisors (178653857).

401971149 is a wasteful number, since it uses less digits than its factorization.

401971149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44663467 (or 44663464 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 401971149 is about 20049.2181643076. The cubic root of 401971149 is about 738.0146129259.

The spelling of 401971149 in words is "four hundred one million, nine hundred seventy-one thousand, one hundred forty-nine".