427915693 has 8 divisors (see below), whose sum is σ = 447775128. Its totient is φ = 408492864.

The previous prime is 427915679. The next prime is 427915711. The reversal of 427915693 is 396519724.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 300744964 + 127170729 = 17342^2 + 11277^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-427915693 is a prime.

It is a super-2 number, since 2×427915693² = 366223680631340498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427915603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107146 + ... + 111067.

It is an arithmetic number, because the mean of its divisors is an integer number (55971891).

Almost surely, 2^427915693 is an apocalyptic number.

It is an amenable number.

427915693 is a deficient number, since it is larger than the sum of its proper divisors (19859435).

427915693 is a wasteful number, since it uses less digits than its factorization.

427915693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218303.

The product of its digits is 408240, while the sum is 46.

The square root of 427915693 is about 20686.1231988983. The cubic root of 427915693 is about 753.5627191708.

It can be divided in two parts, 42791 and 5693, that added together give a palindrome (48484).

The spelling of 427915693 in words is "four hundred twenty-seven million, nine hundred fifteen thousand, six hundred ninety-three".