70237399 has 4 divisors (see below), whose sum is σ = 71126560. Its totient is φ = 69348240.

The previous prime is 70237397. The next prime is 70237403. The reversal of 70237399 is 99373207.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99373207 = 1499 ⋅66293.

It is a cyclic number.

It is not a de Polignac number, because 70237399 - 2¹ = 70237397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70237393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444462 + ... + 444619.

It is an arithmetic number, because the mean of its divisors is an integer number (17781640).

Almost surely, 2^70237399 is an apocalyptic number.

70237399 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

70237399 is a deficient number, since it is larger than the sum of its proper divisors (889161).

70237399 is an equidigital number, since it uses as much as digits as its factorization.

70237399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889160.

The product of its (nonzero) digits is 71442, while the sum is 40.

The square root of 70237399 is about 8380.7755607700. The cubic root of 70237399 is about 412.5939038129.

The spelling of 70237399 in words is "seventy million, two hundred thirty-seven thousand, three hundred ninety-nine".