415397381 has 4 divisors (see below), whose sum is σ = 474739872. Its totient is φ = 356054892.

The previous prime is 415397341. The next prime is 415397383. The reversal of 415397381 is 183793514.

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 a cyclic number.

It is not a de Polignac number, because 415397381 - 2⁶ = 415397317 is a prime.

It is a super-2 number, since 2×415397381² = 345109968283318322, which contains 22 as substring.

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 (415397383) 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, 29671235 + ... + 29671248.

It is an arithmetic number, because the mean of its divisors is an integer number (118684968).

Almost surely, 2^415397381 is an apocalyptic number.

It is an amenable number.

415397381 is a deficient number, since it is larger than the sum of its proper divisors (59342491).

415397381 is an equidigital number, since it uses as much as digits as its factorization.

415397381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59342490.

The product of its digits is 90720, while the sum is 41.

The square root of 415397381 is about 20381.2997868144. The cubic root of 415397381 is about 746.1415952863.

The spelling of 415397381 in words is "four hundred fifteen million, three hundred ninety-seven thousand, three hundred eighty-one".