1427907990 has 64 divisors (see below), whose sum is σ = 3493601280. Its totient is φ = 373443840.

The previous prime is 1427907977. The next prime is 1427908021. The reversal of 1427907990 is 997097241.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 336985 + ... + 341195.

It is an arithmetic number, because the mean of its divisors is an integer number (54587520).

Almost surely, 2^1427907990 is an apocalyptic number.

1427907990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1427907990 is an abundant number, since it is smaller than the sum of its proper divisors (2065693290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1427907990 is a wasteful number, since it uses less digits than its factorization.

1427907990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4437.

The product of its (nonzero) digits is 285768, while the sum is 48.

The square root of 1427907990 is about 37787.6698143720. The cubic root of 1427907990 is about 1126.0735076477.

The spelling of 1427907990 in words is "one billion, four hundred twenty-seven million, nine hundred seven thousand, nine hundred ninety".