49721407 has 2 divisors, whose sum is σ = 49721408. Its totient is φ = 49721406.

The previous prime is 49721383. The next prime is 49721467. The reversal of 49721407 is 70412794.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49721407 - 2⁷ = 49721279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49721467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24860703 + 24860704.

It is an arithmetic number, because the mean of its divisors is an integer number (24860704).

Almost surely, 2^49721407 is an apocalyptic number.

49721407 is a deficient number, since it is larger than the sum of its proper divisors (1).

49721407 is an equidigital number, since it uses as much as digits as its factorization.

49721407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 49721407 is about 7051.3407944872. The cubic root of 49721407 is about 367.7176448457.

It can be divided in two parts, 497 and 21407, that added together give a square (21904 = 148²).

The spelling of 49721407 in words is "forty-nine million, seven hundred twenty-one thousand, four hundred seven".