735399421 has 4 divisors (see below), whose sum is σ = 738113344. Its totient is φ = 732685500.

The previous prime is 735399419. The next prime is 735399451. The reversal of 735399421 is 124993537.

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, and also an emirpimes, since its reverse is a distinct semiprime: 124993537 = 17 ⋅7352561.

It is a cyclic number.

It is not a de Polignac number, because 735399421 - 2¹ = 735399419 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 (735399451) 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, 1356555 + ... + 1357096.

It is an arithmetic number, because the mean of its divisors is an integer number (184528336).

Almost surely, 2^735399421 is an apocalyptic number.

It is an amenable number.

735399421 is a deficient number, since it is larger than the sum of its proper divisors (2713923).

735399421 is a wasteful number, since it uses less digits than its factorization.

735399421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2713922.

The product of its digits is 204120, while the sum is 43.

The square root of 735399421 is about 27118.2488557060. The cubic root of 735399421 is about 902.6258379946.

The spelling of 735399421 in words is "seven hundred thirty-five million, three hundred ninety-nine thousand, four hundred twenty-one".