1397940530 has 32 divisors (see below), whose sum is σ = 2882041344. Its totient is φ = 478247616.

The previous prime is 1397940497. The next prime is 1397940541. The reversal of 1397940530 is 350497931.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10844 + ... + 53976.

It is an arithmetic number, because the mean of its divisors is an integer number (90063792).

Almost surely, 2^1397940530 is an apocalyptic number.

1397940530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1397940530 is an abundant number, since it is smaller than the sum of its proper divisors (1484100814).

1397940530 is a wasteful number, since it uses less digits than its factorization.

1397940530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43610.

The product of its (nonzero) digits is 102060, while the sum is 41.

The square root of 1397940530 is about 37389.0429136666. The cubic root of 1397940530 is about 1118.1401237575.

The spelling of 1397940530 in words is "one billion, three hundred ninety-seven million, nine hundred forty thousand, five hundred thirty".