418725397 has 4 divisors (see below), whose sum is σ = 427634496. Its totient is φ = 409816300.

The previous prime is 418725379. The next prime is 418725409. The reversal of 418725397 is 793527814.

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, and also an emirpimes, since its reverse is a distinct semiprime: 793527814 = 2 ⋅396763907.

It is a cyclic number.

It is not a de Polignac number, because 418725397 - 2²³ = 410336789 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 (418722397) 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, 4454479 + ... + 4454572.

It is an arithmetic number, because the mean of its divisors is an integer number (106908624).

Almost surely, 2^418725397 is an apocalyptic number.

418725397 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

418725397 is a deficient number, since it is larger than the sum of its proper divisors (8909099).

418725397 is an equidigital number, since it uses as much as digits as its factorization.

418725397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8909098.

The product of its digits is 423360, while the sum is 46.

The square root of 418725397 is about 20462.7807738831. The cubic root of 418725397 is about 748.1289044765.

It can be divided in two parts, 4187 and 25397, that added together give a square (29584 = 172²).

The spelling of 418725397 in words is "four hundred eighteen million, seven hundred twenty-five thousand, three hundred ninety-seven".