1390072319 has 4 divisors (see below), whose sum is σ = 1463234040. Its totient is φ = 1316910600.

The previous prime is 1390072267. The next prime is 1390072339. The reversal of 1390072319 is 9132700931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1390072319 is a prime.

It is a super-2 number, since 2×1390072319² = 3864602104100075522, 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 (1390072339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36580832 + ... + 36580869.

It is an arithmetic number, because the mean of its divisors is an integer number (365808510).

Almost surely, 2^1390072319 is an apocalyptic number.

1390072319 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1390072319 is a deficient number, since it is larger than the sum of its proper divisors (73161721).

1390072319 is an equidigital number, since it uses as much as digits as its factorization.

1390072319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73161720.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 1390072319 is about 37283.6736253283. The cubic root of 1390072319 is about 1116.0383843527.

The spelling of 1390072319 in words is "one billion, three hundred ninety million, seventy-two thousand, three hundred nineteen".