398452077 has 12 divisors (see below), whose sum is σ = 575922204. Its totient is φ = 265459200.

The previous prime is 398452051. The next prime is 398452079. The reversal of 398452077 is 770254893.

It can be written as a sum of positive squares in 2 ways, for example, as 204518601 + 193933476 = 14301^2 + 13926^2 .

It is not a de Polignac number, because 398452077 - 2⁶ = 398452013 is a prime.

It is a super-2 number, since 2×398452077² = 317528115331227858, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398452079) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 583 + ... + 28235.

It is an arithmetic number, because the mean of its divisors is an integer number (47993517).

Almost surely, 2^398452077 is an apocalyptic number.

It is an amenable number.

398452077 is a deficient number, since it is larger than the sum of its proper divisors (177470127).

398452077 is a wasteful number, since it uses less digits than its factorization.

398452077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29260 (or 29257 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 398452077 is about 19961.2644138592. The cubic root of 398452077 is about 735.8546382399.

The spelling of 398452077 in words is "three hundred ninety-eight million, four hundred fifty-two thousand, seventy-seven".