70099421 has 4 divisors (see below), whose sum is σ = 80113632. Its totient is φ = 60085212.

The previous prime is 70099399. The next prime is 70099439. The reversal of 70099421 is 12499007.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 70099421 - 2⁶ = 70099357 is a prime.

It is a super-3 number, since 3×70099421³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70099441) 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, 5007095 + ... + 5007108.

It is an arithmetic number, because the mean of its divisors is an integer number (20028408).

Almost surely, 2^70099421 is an apocalyptic number.

It is an amenable number.

70099421 is a deficient number, since it is larger than the sum of its proper divisors (10014211).

70099421 is a wasteful number, since it uses less digits than its factorization.

70099421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10014210.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 70099421 is about 8372.5396983233. The cubic root of 70099421 is about 412.3235530633.

The spelling of 70099421 in words is "seventy million, ninety-nine thousand, four hundred twenty-one".