139682453 has 4 divisors (see below), whose sum is σ = 140078508. Its totient is φ = 139286400.

The previous prime is 139682419. The next prime is 139682479. The reversal of 139682453 is 354286931.

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

It can be written as a sum of positive squares in 2 ways, for example, as 38217124 + 101465329 = 6182^2 + 10073^2 .

It is a cyclic number.

It is not a de Polignac number, because 139682453 - 2¹⁴ = 139666069 is a prime.

It is a super-2 number, since 2×139682453² = 39022375352194418, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 139682453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139682483) 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, 197498 + ... + 198203.

It is an arithmetic number, because the mean of its divisors is an integer number (35019627).

Almost surely, 2^139682453 is an apocalyptic number.

It is an amenable number.

139682453 is a deficient number, since it is larger than the sum of its proper divisors (396055).

139682453 is an equidigital number, since it uses as much as digits as its factorization.

139682453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396054.

The product of its digits is 155520, while the sum is 41.

The square root of 139682453 is about 11818.7331385390. The cubic root of 139682453 is about 518.8565270559.

The spelling of 139682453 in words is "one hundred thirty-nine million, six hundred eighty-two thousand, four hundred fifty-three".