39340739025 has 81 divisors (see below), whose sum is σ = 82011316881. Its totient is φ = 17974817280.

The previous prime is 39340738973. The next prime is 39340739027. The reversal of 39340739025 is 52093704393.

The square root of 39340739025 is 198345.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1001532609 + 38339206416 = 31647^2 + 195804^2 .

It is not a de Polignac number, because 39340739025 - 2³⁵ = 4981000657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (39340739027) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 20825281 + ... + 20827169.

Almost surely, 2^39340739025 is an apocalyptic number.

39340739025 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

39340739025 is the 198345-th square number.

39340739025 is the 99173-rd centered octagonal number.

It is an amenable number.

39340739025 is an abundant number, since it is smaller than the sum of its proper divisors (42670577856).

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

39340739025 is an equidigital number, since it uses as much as digits as its factorization.

39340739025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3808 (or 1904 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 45.

The spelling of 39340739025 in words is "thirty-nine billion, three hundred forty million, seven hundred thirty-nine thousand, twenty-five".