1427790397 has 8 divisors (see below), whose sum is σ = 1639568160. Its totient is φ = 1229675760.

The previous prime is 1427790391. The next prime is 1427790401. The reversal of 1427790397 is 7930977241.

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

It is a cyclic number.

It is not a de Polignac number, because 1427790397 - 2¹⁵ = 1427757629 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1427790397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1427790391) 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, 3415558 + ... + 3415975.

It is an arithmetic number, because the mean of its divisors is an integer number (204946020).

Almost surely, 2^1427790397 is an apocalyptic number.

It is an amenable number.

1427790397 is a deficient number, since it is larger than the sum of its proper divisors (211777763).

1427790397 is a wasteful number, since it uses less digits than its factorization.

1427790397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6831563.

The product of its (nonzero) digits is 666792, while the sum is 49.

The square root of 1427790397 is about 37786.1138118225. The cubic root of 1427790397 is about 1126.0425948256.

The spelling of 1427790397 in words is "one billion, four hundred twenty-seven million, seven hundred ninety thousand, three hundred ninety-seven".