1390271292 has 36 divisors (see below), whose sum is σ = 3520048896. Its totient is φ = 462665280.

The previous prime is 1390271273. The next prime is 1390271299. The reversal of 1390271292 is 2921720931.

1390271292 is a `hidden beast` number, since 13 + 90 + 271 + 292 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-4 number, since 4×1390271292⁴ (a number of 38 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390271299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9084 + ... + 53507.

It is an arithmetic number, because the mean of its divisors is an integer number (97779136).

Almost surely, 2^1390271292 is an apocalyptic number.

1390271292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1390271292 is an abundant number, since it is smaller than the sum of its proper divisors (2129777604).

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

1390271292 is a wasteful number, since it uses less digits than its factorization.

1390271292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63218 (or 63213 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 1390271292 is about 37286.3418961957. The cubic root of 1390271292 is about 1116.0916312013.

The spelling of 1390271292 in words is "one billion, three hundred ninety million, two hundred seventy-one thousand, two hundred ninety-two".