33870949397 has 4 divisors (see below), whose sum is σ = 34697070156. Its totient is φ = 33044828640.

The previous prime is 33870949361. The next prime is 33870949421. The reversal of 33870949397 is 79394907833.

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 8693511121 + 25177438276 = 93239^2 + 158674^2 .

It is a cyclic number.

It is not a de Polignac number, because 33870949397 - 2¹² = 33870945301 is a prime.

It is a super-2 number, since 2×33870949397² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33870949297) 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, 413060318 + ... + 413060399.

It is an arithmetic number, because the mean of its divisors is an integer number (8674267539).

Almost surely, 2^33870949397 is an apocalyptic number.

It is an amenable number.

33870949397 is a deficient number, since it is larger than the sum of its proper divisors (826120759).

33870949397 is an equidigital number, since it uses as much as digits as its factorization.

33870949397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826120758.

The product of its (nonzero) digits is 30862944, while the sum is 62.

The spelling of 33870949397 in words is "thirty-three billion, eight hundred seventy million, nine hundred forty-nine thousand, three hundred ninety-seven".