400325149 has 6 divisors (see below), whose sum is σ = 465684414. Its totient is φ = 343135800.

The previous prime is 400325147. The next prime is 400325173. The reversal of 400325149 is 941523004.

It can be written as a sum of positive squares in only one way, i.e., 323640100 + 76685049 = 17990^2 + 8757^2 .

It is not a de Polignac number, because 400325149 - 2¹ = 400325147 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 (400325147) 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, 4084902 + ... + 4084999.

It is an arithmetic number, because the mean of its divisors is an integer number (77614069).

Almost surely, 2^400325149 is an apocalyptic number.

400325149 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

400325149 is a deficient number, since it is larger than the sum of its proper divisors (65359265).

400325149 is an equidigital number, since it uses as much as digits as its factorization.

400325149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8169915 (or 8169908 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 400325149 is about 20008.1270737668. The cubic root of 400325149 is about 737.0058888506.

The spelling of 400325149 in words is "four hundred million, three hundred twenty-five thousand, one hundred forty-nine".