396447149 has 4 divisors (see below), whose sum is σ = 453082464. Its totient is φ = 339811836.

The previous prime is 396447097. The next prime is 396447211. The reversal of 396447149 is 941744693.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 396447149 - 2⁸ = 396446893 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396447349) 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, 28317647 + ... + 28317660.

It is an arithmetic number, because the mean of its divisors is an integer number (113270616).

Almost surely, 2^396447149 is an apocalyptic number.

It is an amenable number.

396447149 is a deficient number, since it is larger than the sum of its proper divisors (56635315).

396447149 is an equidigital number, since it uses as much as digits as its factorization.

396447149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56635314.

The product of its digits is 653184, while the sum is 47.

The square root of 396447149 is about 19910.9806137217. The cubic root of 396447149 is about 734.6183398062.

The spelling of 396447149 in words is "three hundred ninety-six million, four hundred forty-seven thousand, one hundred forty-nine".