1390737229 has 8 divisors (see below), whose sum is σ = 1607273280. Its totient is φ = 1178666016.

The previous prime is 1390737223. The next prime is 1390737233. The reversal of 1390737229 is 9227370931.

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 1390737229 - 2¹⁷ = 1390606157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390737223) 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, 1115539 + ... + 1116784.

It is an arithmetic number, because the mean of its divisors is an integer number (200909160).

Almost surely, 2^1390737229 is an apocalyptic number.

It is an amenable number.

1390737229 is a deficient number, since it is larger than the sum of its proper divisors (216536051).

1390737229 is an equidigital number, since it uses as much as digits as its factorization.

1390737229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2232419.

The product of its (nonzero) digits is 142884, while the sum is 43.

The square root of 1390737229 is about 37292.5894649326. The cubic root of 1390737229 is about 1116.2162999874.

The spelling of 1390737229 in words is "one billion, three hundred ninety million, seven hundred thirty-seven thousand, two hundred twenty-nine".