1390072343 has 8 divisors (see below), whose sum is σ = 1516959120. Its totient is φ = 1263271680.

The previous prime is 1390072339. The next prime is 1390072363. The reversal of 1390072343 is 3432700931.

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

It is not a de Polignac number, because 1390072343 - 2² = 1390072339 is a prime.

It is a super-2 number, since 2×1390072343² = 3864602237547019298, 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 (1390072363) 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, 14921 + ... + 54797.

It is an arithmetic number, because the mean of its divisors is an integer number (189619890).

Almost surely, 2^1390072343 is an apocalyptic number.

1390072343 is a deficient number, since it is larger than the sum of its proper divisors (126886777).

1390072343 is a wasteful number, since it uses less digits than its factorization.

1390072343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43057.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 1390072343 is about 37283.6739471850. The cubic root of 1390072343 is about 1116.0383907756.

The spelling of 1390072343 in words is "one billion, three hundred ninety million, seventy-two thousand, three hundred forty-three".