737921 has 2 divisors, whose sum is σ = 737922. Its totient is φ = 737920.

The previous prime is 737897. The next prime is 737927. The reversal of 737921 is 129737.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 440896 + 297025 = 664^2 + 545^2 .

It is an emirp because it is prime and its reverse (129737) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 737921 - 2⁶ = 737857 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p₅₉₃₇₅ and since 737921 and 59375 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (737927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 368960 + 368961.

It is an arithmetic number, because the mean of its divisors is an integer number (368961).

2⁷³⁷⁹²¹ is an apocalyptic number.

It is an amenable number.

737921 is a deficient number, since it is larger than the sum of its proper divisors (1).

737921 is an equidigital number, since it uses as much as digits as its factorization.

737921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2646, while the sum is 29.

The square root of 737921 is about 859.0232825715. The cubic root of 737921 is about 90.3656319222.

The spelling of 737921 in words is "seven hundred thirty-seven thousand, nine hundred twenty-one".